A stimulus traveling toward a synapse appears to open calcium ion channels at the presynaptic end, which in turn promotes fusion of synaptic vesicles to the axonal membrane
Indicate whether the statement is true or false
TRUE
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Which of the nitrogenous bases is part of RNA but not DNA?
A) Guanine B) Uracil C) Thymine D) Cytosine
Destruction or loss of the ________ could cause albumin levels in the urine to increase.
A. capillary fenestrae B. slit diaphragm C. parietal layer of the capsule D. glomerular basement membrane
The word "cascade" can be defined as a series of small waterfalls, one leading to the next. Describe a specific second-messenger cascade that results from the series of chemical reactions (from one to the next) initiated by a hormone binding to its receptor.
What will be an ideal response?
Which of the following is NOT true of the female sexual response?
A. The Bartholin glands secrete mucus for lubrication. B. Breasts swell and nipples become erect. C. A refractory period follows orgasm. D. The clitoris can engorge with stimulation.