-
The rods in the retina of the eye
C. are very sensitive to light
-
With what sensations are Pacinian corpuscles associated?
E. pressure
-
Which structure of the ear actually converts mechanical vibrations into action potentials in neurons?
B. sensory hair cells in the cochlea
-
The ear ossicles (i.e., malleus, incus, & stapes) are found in the
A. middle ear
-
The chemoreceptors involved with our sense of olfaction may be found
A. in the nasal epithelium
-
Our sense of dynamic equilibrium involves
B. mechanoreceptors in the semicircular canals
-
Accommodation, the focusing adjustments made be the eye, involves not only changing the shape of the lens, but also changing the diameter of the
C. pupil
-
In order to taste any substance,
A. it must be dissolved in solution
-
A sarcomere
D. is the basic functional or contractile unit of striated muscle tissue
-
Cardiac muscle
B. is composed of branching striated cells
-
What is the role of calcium in muscle contractions?
E. bind to the troponin complex, which leads to the exposure of the myosin-binding sites
-
ATP is required
B. when the sarcomere contracts and when it expands
-
In describing muscle function, a motor unit consists of
E. a motor neuron and the muscle cells it innervates
-
In skeletal muscle, engaging more and more motor units to contract is called
A. recruitment
-
Contraction of a muscle will not occur as long as ________ covers the binding sites on the actin molecules.
C. tropomyosin
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