The ___________ is a strong wall of muscle that contracts to create a suction in the chest to draw in air and expand the lungs. When the muscle relaxes, the chest cavity decreases and the air is pushed out.

(1 point)
Responses

Pulmonary artery
Pulmonary artery

Breathing apparatus
Breathing apparatus

Trachea
Trachea

Diaphragm??

11 answers

The correct answer is Diaphragm. The diaphragm is the muscle that contracts and relaxes to facilitate breathing by creating changes in the pressure within the chest cavity.

Which of the following statements is NOT true?
(1 point)
Responses

Consuming high sugar food right before exercising will give the body a boost of energy for your workout.
Consuming high sugar food right before exercising will give the body a boost of energy for your workout.

The body relies on stored energy to fuel a workout.
The body relies on stored energy to fuel a workout.

Diabetes is a disorder involving the way the body handles sugar.
Diabetes is a disorder involving the way the body handles sugar.

Eating too much sugar immediately before or during exercise can increase the risk of gastrointestinal problems

The statement that is NOT true is:

Consuming high sugar food right before exercising will give the body a boost of energy for your workout.

While sugar can provide a quick source of energy, it may not be the best choice immediately before exercising, as it can lead to a quick spike in blood sugar followed by a crash, potentially affecting performance negatively.

Select the answer below that best describes how the lungs are kept free of germs and dirt from the air.
(1 point)
Responses

The alveoli act as filters for the lungs collecting particles of dirt and germs to be exhaled when the diaphragm relaxes
The alveoli act as filters for the lungs collecting particles of dirt and germs to be exhaled when the diaphragm relaxes

Tiny hairs known as cilia clean the trachea of dirt and germs before it can enter the lungs
Tiny hairs known as cilia clean the trachea of dirt and germs before it can enter the lungs

Hairs known as cilia, found inside the alveoli, collect the dirt and germs to be expelled from the lungs
Hairs known as cilia, found inside the alveoli, collect the dirt and germs to be expelled from the lungs

Mucus found in the bronchial tubes collects dirt and germs that gets into your lungs. Tiny hairs called cilia work to sweep out the debris collected to keep your lungs clean.

The answer that best describes how the lungs are kept free of germs and dirt from the air is:

Mucus found in the bronchial tubes collects dirt and germs that gets into your lungs. Tiny hairs called cilia work to sweep out the debris collected to keep your lungs clean.

This statement accurately describes the role of mucus and cilia in the respiratory system in filtering out dirt and germs.

The term “a smoker’s cough” refers to ________________ , which is caused by a long-term inflammation of the bronchi.
(1 point)
Responses

Emphysema
Emphysema

Lung cancer
Lung cancer

Chronic bronchitis
Chronic bronchitis

Cilia degeneration

The term “a smoker’s cough” refers to Chronic bronchitis, which is caused by a long-term inflammation of the bronchi.

Slow-twitch muscles are needed for:
(1 point)
Responses

Quick, short bursts of energy for high intensity
Quick, short bursts of energy for high intensity

Endurance activities
Endurance activities

Speed or power activities
Speed or power activities

Low endurance and short duration exercises

Slow-twitch muscles are needed for: Endurance activities.

These muscles are designed for prolonged, lower-intensity activities and have a high capacity for aerobic energy production.

Select the answer below that best fits the following description.

Voluntary
Come in pairs
Attach to the bones through tendons
Made up of long, cylindrical fibers

(1 point)
Responses

Striated muscles
Striated muscles

Cardiac muscles
Cardiac muscles

Smooth muscles
Smooth muscles

Contracted muscles

The answer that best fits the description is Striated muscles.

Striated muscles are voluntary muscles that attach to bones through tendons, come in pairs (as they often work in opposing groups), and are made up of long, cylindrical fibers.