The number of pairs ribs articulating with the xiphoid process is
A. 0.
B. 1.5.
C. 2.
D. 2.5.
Answer: A
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Most of the calcium that triggers contraction of cardiac muscle comes
A. into the cell through leakage channels in the sarcolemma. B. into the cell through voltage-gated channels in the sarcolemma. C. from the sarcoplasmic reticulum of the cell. D. from the Golgi apparatus of the cell.
Visual examination of the internal structure of a joint using a fiberoptic instrument is ________________________________________
Fill in the blank(s) with correct word
The total pressure of a gas is 100 mmHg and the mixture is composed of 20% oxygen, 10% water vapor, 5% CO2, and 65% Nitrogen: What is the partial pressure of water vapor?
a. 40 mmHg b. 15 mmHg c. 35 mmHg d. 20 mmHg e. 10 mmHg
All of the following are correct regarding hair growth cycle except that
A) a hair in the scalp grows for 2 — 5 years. B) a healthy adult with full head of hair may lose up to 100 hairs each day. C) during the active phase, the hair grows continuously. D) club hair is shed during follicle reactivation. E) the hair becomes club hair during regression phase.