Which of the following statements is not true of the precapillary sphincters?
A) They decrease the osmotic pressure in the thoroughfare channel.
B) They increase or decrease rates of perfusion to the tissues served by the true capillaries.
C) They allow blood to bypass the true capillaries that are fed by the metarteriole.
D) They regulate the flow of blood to tissues served by the true capillaries.
A
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Which sympathetic pathway involves a preganglionic neuron that synapses with a ganglionic neuron in a sympathetic trunk ganglion, but the postganglionic axon does not leave the trunk via a gray ramus?
A. Splanchnic nerve pathway B. Adrenal medulla pathway C. Postganglionic sympathetic nerve pathway D. Spinal nerve pathway E. None of the choices is correct.
What gland produces tears?
a. lateral gland b. crimson gland c. lacrimal gland d. luminal gland e. pineal gland
The ____ is the largest and heaviest bone of the body
a. humerus b. tibia c. femur d. ulna
The amount of blood pumped through the pulmonary circuit is less than the amount pumped through the systemic circuit.
Answer the following statement true (T) or false (F)