The coronary circulation is characterized by many connections between arteries that supply the same region of the heart. This helps ensure blood supply in the event of a blockage (occlusion). What are these connections called?
A) anastomoses
B) arterioles
C) capillary beds
D) coronary bypass
Ans: A) anastomoses
You might also like to view...
The cranial nerve that passes through the cribriform plate of the ethmoid bone is the ________ nerve.
A. abducens B. oculomotor C. olfactory D. optic E. trigeminal
Complications associated with the one-person bag-mask ventilation technique are MOST often related to:
A) hyperinflation of the lungs. B) unrecognized rescuer fatigue. C) improper manual head positioning. D) inadequate tidal volume delivery.
Arrange the four structures listed below into the order in which sperm pass from the testis to the external urethral orifice. 1. ductus deferens 2. urethra 3. ejaculatory duct 4. epididymis
A) 1, 3, 4, 2 B) 4, 3, 1, 2 C) 4, 1, 2, 3 D) 4, 1, 3, 2 E) 1, 4, 3, 2
Which statement regarding graded potentials is false?
a. they are decremental. b. they travel only short distances. c. they are self-propagating. d. they may contribute to the development of an action potential. e. they travel in both directions along the membrane.