The normal sequence of structures activated for signal transmission and response in the body is
a. effector??afferent neuron?interneuron?efferent neuron?receptor
b. effector?efferent neuron?interneuron?afferent neuron?receptor
c. receptor?afferent neuron?interneuron?efferent neuron?effector
d. receptor?efferent neuron?interneuron?afferent neuron?effector
e. receptor?interneuron?efferent neuron?afferent neuron?effector
C
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Which of the following is not a known cause of congenital anomalies?
A. Smoking during lactation B. Smoking during pregnancy C. Exposure to teratogens during pregnancy D. Infectious disease in the mother during pregnancy E. A genetic disorder
If the pituitary gland is removed from a human subject, which of the following is likely to occur?
A. The adrenal gland will hypertrophy to increase cortisol production. B. There will be increased negative feedback on growth hormone by insulin-like growth factor 1 (IGF-1). C. The subject will remain euthyroid. D. The hypothalamus will secrete less CRH. E. The adrenal gland will atrophy and plasma cortisol levels will be reduced.
At the knee, the articular capsule encloses only the medial, lateral, and anterior regions of the joint.
Answer the following statement true (T) or false (F)
What purpose does the coronary circuit serve?
A. None; it is a vestigial set of vessels. B. It delivers 1/20 of the body's blood supply to the heart muscle itself. C. It delivers blood to the anterior lung surface for gas exchange. D. It feeds the anterior thoracic wall.