What is/are the purpose(s) of the patella?
A. increase the angle between the tendon and tibia
B. increase the mechanical advantage of the quadriceps
C. to protect the anterior aspect of the knee
D. all of the above
D. all of the above
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Since cartilage must be continuously replaced in the body, appositional and interstitial growth of cartilage continues throughout life
Indicate whether this statement is true or false.
In osmoregulators such as mammals
a. the osmotic balance between the ECF and the ICF is carefully monitored and controlled by the kidneys. b. cells will lose water if the ECF becomes hypertonic. c. some cells exhibit RVI (regulatory volume increase) as a way of compensating water loss when the ECF becomes hypertonic. d. the ICF is influenced by changes in the ECF. e. all of these.
Why do pregnant women often have heartburn?
A. The mother's body is purging itself of toxins to protect the fetus. B. As the uterus enlarges it pushes upward on the stomach, causing gastric reflux. C. Elevated levels of estrogens cause morning sickness. D. There is reduced intestinal motility.
Which is FALSE about interneurons?
A. They receive synaptic input from other neurons in the CNS. B. They sum excitatory and inhibitory synaptic inputs. C. They deliver synaptic input on other neurons. D. They make synapses on effector organs in the PNS. E. They can transmit information between afferent neurons and efferent neurons.