Ask a New Question
Menu

Question 1 (1 point)

Saved
Which statement best describes the role of the lung in gas exchange?

Question 1 options:

It takes in oxygen from the bloodstream

It produces oxygen as a waste product of cellular respiration

It extracts oxygen from the atmosphere for use by body cells

It provides carbon dioxide to the capillaries

Question 2 (1 point)
Which part of the nervous system takes in information from the environment?

Question 2 options:

sensory receptors

brain

spinal cord

motor neurons

Question 3 (1 point)
Which outcome could be the goal of a negative feedback loop?

Question 3 options:

to enhance an action of a stimulus

to release hormones

to signal receptors to take in sensory information

to return a substance to a normal level

Question 4 (1 point)
Which option describes a positive feedback mechanism?

Question 4 options:

producing clotting factors in response to a cut

producing the hormone glucagon to increase blood sugar

producing the hormone insulin to lower blood sugar

producing gastric enzymes when food is in the stomach

Question 5 (1 point)
Which statement about the nervous system is correct?

Question 5 options:

The brain and spinal cord make up the PNS

The PNS consists entirely of sensory neurons

The autonomic system has parasympathetic and sympathetic divisions

The somatic system is a part of the sensory division

1 answer

Here are the answers to your questions:

Question 1:
Which statement best describes the role of the lung in gas exchange?
Answer: It extracts oxygen from the atmosphere for use by body cells.

Question 2:
Which part of the nervous system takes in information from the environment?
Answer: sensory receptors.

Question 3:
Which outcome could be the goal of a negative feedback loop?
Answer: to return a substance to a normal level.

Question 4:
Which option describes a positive feedback mechanism?
Answer: producing clotting factors in response to a cut.

Question 5:
Which statement about the nervous system is correct?
Answer: The autonomic system has parasympathetic and sympathetic divisions.

Feel free to ask if you have more questions!