Myosin is also known as the
A. intermediate myofilament.
B. sarcomere.
C. short myofilament.
D. thin myofilament.
E. thick myofilament.
Answer: E
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Which wrist bone is immediately proximal to the fifth metacarpal (V)?
A) hamate B) capitate C) trapezium D) trapezoid
The tracheal cartilage consists of pieces of cartilage adjacent to the trachea with the opening
A. anterior. B. posterior. C. lateral. D. There are no openings in the tracheal cartilage.
Stroke volume
A. Is the difference between end-diastolic volume (EDV) and end-systolic volume (ESV) B. Is higher in athletes compared to non-athletes at rest, leading to decreased resting heart rate C. Can be increased by contracting skeletal muscle D. Is normally 50-75% of the end-diastolic volume E. All of the above are true of stroke volume
A neuromodulator
A. acts as a neurotransmitter. B. inactivates neurotransmitters. C. is a receptor site for a neurotransmitter. D. has no influence on the amount of neurotransmitter released. E. is a substance released from neurons that influences the sensitivity of neurons to neurotransmitters.