Which pressure equals atmospheric pressure during a pneumothorax, causing the lungs to collapse?

A) intrapleural pressure
B) atmospheric pressure
C) transpulmonary pressure
D) rebound pressure (elastic recoil)
E) intra-alveolar pressure


Answer: A) intrapleural pressure

Biology & Microbiology

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Place the following events of fertilization in the correct chronological order.

(1) Sperm contacts the cumulus mass. (2) Proteolytic enzymes are released from the acrosome. (3) Sperm contacts the plasma membrane of the ovum. (4) Sperm passes through the zona pellucida. (5) Sperm increase ATP production. A. 5,1,2,4,3 B. 1,5,4,3,2 C. 1,2,4,3,5 D. 5,2,4,3,1 E. 3,5,2,1,4

Biology & Microbiology

Nutrients are often transformed and cycled by oxidation-reduction reactions that can change the chemical and physical characteristics of the nutrients.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Which of the following is not a function of muscle?

A) destabilize joints B) generate heat C) move blood in veins D) move lymph in lymphatic vessels

Biology & Microbiology

Humans are composed of ________ cells

A) bacterial B) eukaryotic C) plant D) prokaryotic

Biology & Microbiology