What type of capillaries have large pores within their endothelial cells and are the leakiest?
What will be an ideal response?
Sinusoidal capillaries
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Coordinated movements of the microvilli in the proximal convoluted tubule assist in the propulsion of tubular fluid toward the nephron loop.
Answer the following statement true (T) or false (F)
What happens when acetylcholine stimulates its receptors in the neuromuscular junction?
A. The permeability of the sarcolemma to Na+ increases. B. The release of Ca2+ from the sarcoplasmic reticulum decreases. C. The threshold of the muscle fiber lowers. D. The positive charge on the sarcolemma decreases. E. The inhibitory effect of acetylcholinesterase is overridden.
Which of the following statements related to the "ON pathway" of the visual system is correct?
A. Bipolar cells fire action potentials only when bright light strikes the photoreceptors linked to them. B. Bipolar cells spontaneously depolarize in the absence of input from photoreceptor cells. C. Bipolar cells hyperpolarize in the absence of input from photoreceptor cells. D. Glutamate receptors on bipolar cells are excitatory. E. Only cones are associated with bipolar cells of the "ON pathway," rods are not.
When the resting membrane potential becomes more _____ the condition is referred to as hyperpolarization.
Fill in the blank(s) with the appropriate word(s).