Platelets release this substance, which contributes to vascular spasms.
A. ADP
B. Prothrombin
C. Serotonin
D. Factor III
Answer: C. Serotonin
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From superior to inferior, how many individual vertebrae are there of each type?
A. 12; 7; 5; 5; 4 B. 12; 5; 5; 7; 4 C. 7; 5; 5; 12; 4 D. 7; 12; 5; 5; 4 E. 7; 5; 5; 4; 12
Which of the following events occurs in an erection?
A. Vasoconstriction of arteries leading to erectile tissue of penis B. Engorgement of erectile tissue of penis with blood C. Relaxation of internal sphincter of urinary bladder D. Dilation of venules leading from erectile tissue of penis E. Decrease of blood flow to the penis
Coronal, sagittal, and lambdoid are examples of ________
A) gomphoses B) serrate sutures C) plane sutures D) syndesmoses E) lap sutures
The visceral pleura
A. is attached to the lung's surface. B. lines the thoracic cavity. C. is a mucous membrane. D. All apply.