The strong external force on muscle can lengthen it beyond
resting length. This elongation can reach 160% of resting length
from which point structural damage like breakage occurs. Further
the stretch more miscle resist.
Will a highly active muscle receive more, same or less oxygen
than a resting muscle? Explain the mechanism that may influence
oxygen delivery to this muscle. Appropriate diagrams/graphs
describing relevant hemoglobin properties are required in order to
receive full credit.
Which of the following are characteristics of an
isotonic muscle twitch?
The length of the muscle remains constant
The length of the muscle remains constant and latent period
than in an isometric twitch
The muscle shortens at a constant velocity and the length of
the latent period is longer than in an isometric twitch
The muscle shortens at a constant velocity
The afferent division of the peripheral nervous
system
Transmits action potentials to sensory organs
Conveys action potentials to the...
1. Explain why the A band does not change length during muscle
contraction but the I band and H-zone do change length.
2. Describe the cause of muscle strength gains early
(1st 8 weeks) in a resistance training program and the
cause of muscle strength gains later (after 8 weeks) in a
resistance training program.
3. Explain what myonuclear domain is and what myonuclear domain
threshold is.
4. Explain why it is important for myosin heads within a myosin
protein...
A 50 year-old male patient presented to his physician with a
resting blood pressure of 160/100. He had no other medical
concerns. He was prescribed Losartan, 50mg per day. This medication
is an angiotensin II receptor antagonist. Discuss how a drop in
renal blood flow will result in the formation of angiotensin II,
and why Losartan will prevent a blood pressure
increase.