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What term refers to the temporary cessation of breathing?

A.

Apnea

B.

Dyspnea

C.

Hyperpnea

D.

Eupnea

Answer and Explanation

The Correct Answer is A

A. Apnea: Apnea is the temporary cessation (absence) of breathing.
B. Dyspnea: Dyspnea means difficult or labored breathing (shortness of breath), not cessation.
C. Hyperpnea: Hyperpnea refers to increased depth and/or rate of breathing (e.g., during exercise), not a pause.
D. Eupnea: Eupnea is normal, unlabored breathing; the opposite of cessation


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Related Questions

Correct Answer is A

Explanation

A. Pap Smear:The Papanicolaou (Pap) smear screens cervical cells for precancerous changes (dysplasia) and is the standard test for early detection of cervical cancer.
B. BRCA test: BRCA genetic tests assess hereditary breast/ovarian cancer risk (BRCA1/2), not cervical cancer screening.
C. ELISA test: ELISA is a lab technique for detecting antibodies/antigens (used in many contexts, e.g., HIV testing) but is not a routine screening test for cervical cancer.
D. Mammogram:A mammogram is an imaging test used to screen for breast cancer, not cervical cancer.

Correct Answer is D

Explanation

A. Cellular metabolism: Cellular metabolism refers to the chemical reactions inside cells that use O₂ and produce CO₂, but it does not describe the movement of gases between blood and cells.
B. Alveolar ventilation: Alveolar ventilation is the movement of air into and out of the alveoli (airways → lungs), not the exchange between blood and body cells.
C. External respiration: External respiration is gas exchange between the alveoli and pulmonary capillaries (air and blood in the lungs), not between blood and tissues.
D. Internal respiration: Internal respiration is the exchange of O₂ from the blood into body cells and CO₂ from the cells into the blood .

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