Transverse tubules contain voltage-gated calcium channels that respond to membrane depolarization, and are directly coupled to the calcium release channels in the sarcoplasmic reticulum.
Answer the following statement true (T) or false (F)
True
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The vessel that returns blood from the abdomen and legs to the heart is the __________ vena cava.
Fill in the blank(s) with the appropriate word(s).
In physiological terms, a set point can be defined as
a. the value of a parameter, such as the concentration of sugar in the blood, that homeostatic mechanisms aim to maintain. b. the value of a parameter, such as the concentration of sugar in the blood, that set homeostatic mechanisms in motion. c. the location in a thermal gradient at which a poikilothermic organism rests, reflecting is preferred body temperature. d. the winning stroke in a tennis match.
The speed of nerve impulse transmission through the axon of a sensory neuron will be quickest in:
A) a large-diameter, myelinated axon. B) axons with a greater receptive field. C) a small-diameter, unmyelinated axon. D) axons that adapt to stimuli.
To raise your hand and place it on the shoulder of a person standing in front of you involves ________ of the shoulder.
A. flexion B. adduction C. abduction D. supination E. retraction