Migraine results from
A) a neurotransmitter deficiency.
B) release of calcitonin gene-related peptide from the trigeminal nerves at the base of
the brain, in response to a spreading wave of excitation followed by lack of
response from the cortex.
C) release of an abnormal form of beta endorphin from the trigeminal nerves at the
base of the brain, in response to cortical stimulation.
D) not eating enough chocolate, which causes a spreading effect in the cortex.
B
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Which ovarian hormone is secreted at negligible levels during the first half of the ovarian cycle?
a. estrogen b. progesterone c. LH d. FSH e. prolactin
The _____ is attached to the large intestine and assists in development of immunity. Select one:
a. Peyer patches b. appendix c. spleen d. thymus
What role do the lymphatic vessels have when it comes to fluid movements across capillary beds?
A. Lymphatic vessels reclaim any fluid from the tissue spaces that doesn't get returned to the blood. B. Lymphatic vessels also deliver O2 to tissues. C. Lymphatic vessels provide the hydrostatic pressure that drives filtration. D. Lymphatic vessels provide the colloid osmotic pressure in the capillaries that reclaims wastes from the tissues for transport in the blood.
What does "A" represent?
A. spinal nerves B. conus medullaris C. cervical enlargement D. filium terminale E. cauda equina