If blood calcium levels drop below 8.5 mg/dL which hormone is likely to be activated?
A) parathyroid hormone
B) estrogen
C) calcitonin
D) calcitriol
E) both calcitriol and parathyroid hormone
E
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Extension decreases the angle between 2 bones
Indicate whether the statement is true or false.
Blood pressure in the glomerulus is _______ than in other capillaries due to the relatively large diameter of ________ arterioles
A. higher; afferent B. higher; efferent C. lower; afferent D. lower; efferent
Which of the following is not possible?
A) Gas flow equals pressure gradient over resistance. B) Pressure gradient equals gas flow over resistance. C) Resistance equals pressure gradient over gas flow. D) The amount of gas flowing in and out of the alveoli is directly proportional to the difference in pressure or pressure gradient between the external atmosphere and the alveoli.
Which reflex shows the least synaptic delay?
A) A polysynaptic reflex B) The tendon reflex C) The withdrawal reflex D) The cross extension reflex E) The flexor reflex