Statocysts are sensory organs used to perceive
a. consciousness, or state of being.
b. an organism's orientation in space.
c. surface hardness.
d. none of the above.
B
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A threshold potential is
a. the potential achieved when two opposing forces acting upon an ion (concentration and electrical gradients) achieve a state of equilibrium b. the peak potential achieved during an action potential c. the point at which there is an explosive increase in Na+ or Ca2+ permeability d. the potential at which K+ permeability increases e. always a positive potential
Maintaining good fitness is helpful in preventing an injury
Indicate whether the statement is true or false
There are three gluteal muscles. Select the one that is correctly matched with its primary action
A. Gluteus medius: abducts the thigh B. Gluteus maximus: abducts the thigh C. Gluteus minimus: rotates the thigh
Lysosomal enzymes degrade dysfunctional organelles by selective self-digestion known as autophagy
a. True b. False Indicate whether the statement is true or false