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Re'Naldo Radford
Midterm (Physiology)
Question | Answer |
---|---|
A decrease in blood pH below normal tends to: | stimulate increased respirations. |
How does a dually innervated autonomic effector differ from a singly innervated autonomic effector? | A dually innervated effector receives input from both sympathetic and parasympathetic pathways. A singly innervated autonomic effector receives input from only the sympathetic division. |
Which of the following is not associated with the oculomotor nerve? | Closing and opening of the eye (blink reflex) |
Tic douloureux is a painful neuralgia of the _____ nerve. | Trigeminal |
Impulses from the _____ play a part in arousing or alerting the cerebrum. | Thalamus |
If you slammed your finger in a car door, it would stimulate _____ pain fibers. | Acute |
Dynamic equilibrium depends on the functioning of the | crista ampullaris. |
The sequence of auditory ossicles in the middle ear starting at the tympanic membrane and ending at the oval window is: | malleus, incus, and stapes. |
One of the few hormones that functions on a positive-feedback loop is: | Oxytocin |
The type of cells that secrete ACTH are: | corticotrophs |
The mechanisms of which three hormones work together to regulate blood volume? | aldosterone, ANH, and ADH |
The physiological mechanism that dissolves clots is known as | fibrinolysis |
What is the functional significance of large areas of cardiac muscle being electrically coupled to form a single functional syncytium? | Because they form a syncytium, muscle cells can pass an action potential along a large area of the heart wall, stimulating contraction in each muscle fiber of the syncytium. |
Starling’s law of the heart states that, within limits, the longer, or more stretched, the heart fibers are at the beginning of the contraction, the | stronger the contraction. |