What acts as a pacemaker, initiating the heartbeat?
A. Nerves
B. SA node
C. AV node
D. Brain
Answer: B
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Which is not characteristic of a cell undergoing apoptosis?
A. Inflammation B. Chromatin degradation C. Changes in organelle and plasma membrane structure D. Shrinkage in volume
Answer the following questions true (T) or false (F)
1. The myogenic mechanism counters changes in blood flow through capillary beds by altering arterial resistance. 2. Filtration occurs in capillaries when colloid osmotic pressure is greater than capillary hydrostatic pressure. 3. The vertebral and external jugular veins drain into the subclavian vein.
Lacrimal glands are endocrine glands.
Answer the following statement true (T) or false (F)
Parturition refers to
A) Childbirth. B) Gestation. C) Menstruation. D) Placental development.