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A&P 1 Exam 3 Review Questions From Class

Terms in this set (57)

The functional unit of muscle fiber
Sarcomere
Thick filaments are found
A Band
In a resting muscle cell, myosin-binding sites are blocked by
tropomyosin
T-Tubules are an extension of
Sarcolemma
When a muscle cell is at rest, most of the intracellular calcium is found stored in the
Sarcoplasmic Reticulum
Calcium Ions bind to what, when present in the sarcoplasm
Troponin
What substance must bind to myosin heads for the heads to detach from the thin filaments
ATP
Calcium is released from the terminal cisterns in response to
Action potential
A single contraction in response to a single threshold stimulus
twitch
The force exerted by a contracting muscle is
Muscle Load
Skeletal muscle contractions increase in strength because of
Recruitment of motor units
The energy source that is directly used for muscle contraction is
ATP
The central sulcus divides which two lobes of the cerebrum
Frontal and Parietal
Fibers that connect gray matter between the two cerebral hemispheres
commissures
The basal nuclei are part of the
Cerebrum
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