Place the events of action potential propagation in an unmyelinated axon.
What will be an ideal response?
1. generation of initial action potential.
2. generation of a local current in membrane adjacent to initial action potential.
3. plasma membrane adjacent to initial action potential depolarizes
4. plasma membrane reaches threshold
5. generation of next action potential.
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Which specialized connective tissue holds together freely moving joints?
A. Tendons B. Ligaments C. Epiphyses D. Muscles
Which of the following statements concerning water reabsorption is correct?
a. water reabsorption is under control of vasopressin throughout the length of the nephron. b. the ascending limb of the loop of Henle is always impermeable to water. c. vasopressin makes the distal and collecting tubules impermeable to water. d. fifteen percent of the filtered water osmotically follows the absorption of Na+ and other solutes in the proximal tubule. e. water reabsorption is passive in the early portions of the nephron but is active in the distal portions of the nephron.
Which nervous system primarily controls and increases salivation?
A) submucosal nervous system B) parasympathetic nervous system C) enteric nervous system D) sympathetic nervous system
The secretion of the seminal vesicles contains ________, which forms a temporary semen clot within the vagina after ejaculation.
A) fructose B) prostaglandin C) fibrinogen D) seminalplasmin E) urine