The cell-to-cell contacts of the cardiac muscle fibers are called
A. cardiac discs.
B. T-tubules.
C. intercalated discs.
D. sarcoplasmic reticulum.
E. Z discs.
Answer: C
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Which of the following nerves is labeled B in the diagram?
a) phrenic nerve b) axillary nerve c) intercostal nerve d) femoral nerve e) common fibular nerve
When a section of the resting neuron is stimulated:
a. sodium ions rush into the cell b. sodium ions rush out of the cell c. the interior of the cell becomes slightly positive d. both A and C above
The radial collateral ligament is associated with the
A) shoulder joint. B) knee joint. C) elbow joint. D) hip joint.
Small molecules, such as water and many ions, cross the membrane without assistance from the cell. This movement is called ________ and requires NO energy expenditure by the cell
A) passive transport B) active transport C) facilitated diffusion D) None of the listed responses is correct.