Questions and answers by

Truth

Questions (221)

A) What is the largest artificial body in orbit?, B) How long is the ISS usually viewable when the ISS passes overhead?, C) When
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Which of the following IS a role of the vitreous humor?Group of answer choices It supplies nutrients to the lens of the eye. It
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Which layer of the epidermis is responsible for regenerating the most superficial layers?Group of answer choices stratum
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Which ear ossicle connects to the inner ear?Group of answer choices Anvil Incus Stapes Malleus
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Which division of the nervous system has short preganglionic neurons?Group of answer choices Parasympathetic Sympathetic Somatic
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Which autonomic neurons release norepineprhine as a neurotransmitter?Group of answer choices Sympathetic postganglionic neurons
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Which accessory eye structures function to produce the tears that cleanse and protect the eye?Group of answer choices medial
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Where are equilibrium receptors located?Group of answer choices Only in the vestibule of the ear. In the semicircular canals and
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What structure in the eye provides nutrition to all eye layers?Group of answer choices cornea vitreous humor ciliary body
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What part of the eye constitutes the blind spot?Group of answer choices ora serrata fovea centralis optic disc macula lutea
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What part of the epidermis gives rise to friction ridges (fingerprints)?Group of answer choices The papillary layer The
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What layer of skin is (are) damaged in a second-degree burn?Group of answer choices Only the dermis is damaged. Only the
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What is the effect of norepinephrine on the heart?Group of answer choices A decrease in heart rate A decrease in stroke volume
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Vision is fully developed at birth.Group of answer choices True False
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The visible colored portion of the eye is the:Group of answer choices iris pupil sclera cornea
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The two types of receptors that bind acetylcholine are _____ and _____ receptors.Group of answer choices Nicotinic; caffeinic
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The two divisons of the ANS normally have what relationship?Group of answer choices Antagonistic Mutualistic Synergistic
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The sympathetic nervous system is often referred to as the "resting and digesting" system.Group of answer choices True False
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The skin consists of three main regions. From deep to superficial they are the:Group of answer choices epidermis, dermis, and
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The receptor organ for hearing is the ____.Group of answer choices Crista ampullaris Modiolus Spiral organ of Corti Oval window
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The most common type of skin cancer is:Group of answer choices melanoma. basal cell carcinoma. squamous cell carcinoma. All of
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The major function of the conjunctiva is to:Group of answer choices produce tears to lubricate the eyes. produce sweat to cool
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The final step in perceiving sound is:Group of answer choices the tympanic membrane vibrates. the cochlear hair cells are
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The boundary between the external and middle ear is the:Group of answer choices Mastoid antrum External acoustic meatus
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The biggest risk factor for the development of skin cancer is excessive exposure to ultraviolet light.Group of answer choices
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Sweat is secreted by:Group of answer choices suderiferous glands ceruminous glands sebaceous glands mammary glands
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Sweat is secreted by
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Susan sat out in the sun watching a baseball game. She developed small blisters on her unprotected shoulders and neck. What type
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Sebum does NOT:Group of answer choices slow water loss from the skin during low humidity conditions. protect the skin from the
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Ringing in the ear is called
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Does skin help to regulate our body temperature
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Once a preganglionic axon reaches a trunk ganglion, one of three things can happen to the axon. Which of the following is NOT
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Oculomotor nerves are responsible for which of the following functions?Group of answer choices Activating the nasal and lacrimal
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Most taste buds are located
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Hair and nails are primarily made of
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True or falseHair and nails are made primarily of calcium.
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Hair and nails are made primarily of calcium
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For which of the following activities is the parasympathetic nervous system generally responsible?Heartbeat and breathing
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Eye color is determined by the level of brown pigment present.Group of answer choices True False
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Even though we have two eyes, why do we normally see only one image?Group of answer choices Information from each eye goes to
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Earwax is made by
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Nyctalopia
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Hyperopia
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Choose the CORRECTLY paired terms.Group of answer choices Astigmatism: clouding of the lens Myopia: farsightedness Hyperopia:
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True or falseBlood "shunting" is a dangerous situation in which the vital organs shut down, causing the body to go into
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A cancerous growth on the skin will likely exhibit:Group of answer choices asymmetry. regular borders. uniform coloration. a
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____axis of rotation is a peculiarity?
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List the Jovian planets in order of increasing distance from the Sun.Neptune, Uranus, Saturn, and Jupiter Mercury, Venus, Earth,
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List the terrestrial planets in order of increasing distance from the Sun.Mars, Jupiter, Saturn, Mercury Mercury, Venus, Earth,
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The ______ shortens with cross-bridge cycling. Shortening occurs because many actin thin filaments overlap the myosin thick.
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What returns the myosin head to its original position?Blocking of actin thin filament sites Splitting of ATP Water Power stroke
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What occurs when ATP binds to myosin?Power stroke Formation of a cross-bridge Myosin detached from actin ATP splits into ADP and
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The _______ occurs during cross-bridge cycling and pulls the thin filament towards the center of the sarcomere.
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What portion of the myosin thick filaments form cross-bridges?Globular head and tail Middle portion of the myosin filament Tail
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What portion of the myosin thick filaments form cross-bridges?
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Pegan holidays
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Technetium-99 (half-life = 6.01 h) is used in medical imaging. How many half-lives would go by in 14.0 h?
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How does the number of protons change with beta decay?
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Name the force that holds a nucleus together.gravitational force the strong nuclear force the weak nuclear force electromagnetic
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Name the force that holds a nucleus together.gravitational force the strong nuclear force the weak nuclear force electromagnetic
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On which atom are all atomic masses based?Carbon Oxygen Uranium Hydrogen What mass is assigned to that atom? 1 u 12 u 16 u 1.008
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About what percentage of the mass of an atom is contained in the nucleus?
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Which of the following particles is not inside the nucleus?nucleon neutron electron proton
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One of the fusion reactions that takes place as a star ages is called the triple alpha process.3 ^4_2He → ^12_6C Calculate the
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What are exchange particles, and how do they relate to the fundamental forces?They are the particles that make up the nucleus of
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How many quarks are believed to make up a proton?
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Ionizing radiation is radiation that is energetic enough to knock out of atoms or molecules and form . Such radiation can .
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Which unit is most closely associated with the biological effects of radiation?the rem the cpm the becquerel the curie
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Fusion requires extremely temperatures, and the plasma must be kept from touching the reactor walls or else it will .
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In magnetic confinement, are used to the plasma, and are used to confine its charged particles. In inertial confinement, implode
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What is a plasma?a very cold gas of electrons and positively charged ions a very hot gas of electrons and positively charged
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The equation E = mc2 was developed by which scientist?Becquerel Einstein Curie Rutherford
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The equationE = mc2 was developed by which scientist? Becquerel Einstein Curie Rutherford Identify what each of the letters in
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What is a "meltdown"?fusion of control rods melting of fuel rods a huge explosion of the power plant when gases are vented from
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Tritium (half-life = 12.3 yr) is used to verify the age of expensive brandies. If an old brandy contains only 1/64 of the
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Use the graph in the figure below to find the half-life of isotope A.A grid has a horizontal axis labeled Time (days) and a
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Tritium (half-life = 12.3 yr) is used to verify the age of expensive brandies. If an old brandy contains only 1/64 of the
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A clinical technician finds that the activity of a sodium-24 sample is 1,024 cpm. What will be the activity of the sample (in
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A thyroid cancer patient is given a dosage of ^131I (half-life = 8.1 d). What fraction of the dosage of 131I will still be in
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A thyroid cancer patient is given a dosage of 131I(half-life = 8.1 d). What fraction of the dosage of 131I will still be in the
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After five half-lives have gone by, what fraction of a sample of a radioactive isotope remains?
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Neon (10Ne) has three stable isotopes with consecutive mass numbers. Write the complete nuclear symbol (with neutron number) for
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What are the nuclear notations for the isotopes of hydrogen, commonly referred to as H, D, and T?
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On high-protein diets, the nutrient needed in greater amounts to remove excess urea from the body is
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What do we call amino acids that can generate glucose in the body?
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Adequate intake of which two minerals poses the greatest concern for all vegetarians, and not just vegans?a. iron and calcium b.
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Your client, Annie, follows a diet that includes eggs, vegetables, grains, legumes, fruit, and nuts but excludes meat, poultry,
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For a protein to be of high quality, it must _____.a. contain all of the essential and nonessential amino acids b. contain all
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An example of complementary proteins would be _____.a. apples and walnuts b. milk and meat c. beans and rice d. bacon and eggs
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The calculated protein RDA for a healthy adult weighing 160 pounds would be approximately
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A high-protein diet can result in _____.a. development of SAM b. bone disease c. worsening of existing kidney disease d. wasting
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Giant protein molecules called antibodies act to _____.a. promote antigen production b. destroy specific antigens c. maintain
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When there is swelling of body tissue caused by leakage of fluid from the blood vessels, fluid in the interstitial space remains
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A function of protein is to help maintain fluid distribution within the body by _____.a. diffusing through the membranes that
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A function of protein is to help maintain fluid distribution within the body by
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If the body has synthesized more protein than it degrades, which statement is accurate?a. Nitrogen status is negative. b.
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Which person would be at greatest risk for negative nitrogen balance?a. a young woman consuming 25% of total kcalories as
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Which person would be at greatest risk for negative nitrogen balance?
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When a person eats protein, ______________ break(s) down peptides into amino acids.
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The shape of a hemoglobin molecule can best be described as _____.a. a hollow ball b. stiff, sturdy, and rod-like c. ribbon-like
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