for the biceps
and triceps muscle
How is the
mechanical behavior of a single muscle fiber in tension
different
from the whole
muscle? What is the functional value?
For Aaron's biceps muscle to be able to generate the same amount
of tension as before the accident, the muscle fibers that were not
damaged would need to generate more tension to make up for the
fibers that were damaged. Explain how these healthy muscle fibers
would do this. Would the Ca2+ concentration in the cytoplasm in the
healthy muscle fibers need to increase or decrease to generate a
stronger contraction? How does this happen?
When your brain decides to flex your biceps and the motor neurons
to the appropriate muscle has/been excited, what is the chain of
eventd that intiate excitation to the actual contraction of the
muscle. Be as detailed as possible and assume beginning with the
motor neuron releasing ACh.
Please check my answers
1.The biceps brachii muscle is the prime mover in the flexion of
the elbow.
TRUE
2.The triceps brachii muscle is the antagonist in flexion of the
elbow.
TRUE
3.The triceps brachii muscle is the prime mover in extension of
the elbow.
TRUE
4. The biceps brachii muscle is the antagonist in extension of
the elbow.
TRUE
5. The gastrocnemius muscle inserts on the calcaneus via the
calcaneal tendon (Achilles Tendon).
TRUE
6. The deltoid muscle...
Which one of these is not an example of a quantitative
trait?
Select one:
a. muscle mass in pigs
b. number of bristles on the thorax of Drosophila
melanogaster
c. egg production in chickens
d. stamen lengths in monkey flowers
e. sickle cell trait in humans
Describe how your biceps muscle contracts IN SERIES AT CELLULAR
& MYOFIBER LEVELS when you drink a cup of coffee. You should
include the following concepts: - How resting membrane potential is
negatively charged in the cell - Depolarization and repolarization
of the cells - How neural signal (a motor neuron) is sending to
skeletal muscular cells - Include the roles of T-tubule, SR,
Calcium ions, thick/think filaments, cross bridge, power stroke,
ATP in muscle contraction
1/
Which of the following characteristics is shared between smooth
muscle and skeletal muscle?
Select one: _
a. Striated arrangement of the actin and myosin filaments
_
b. Presence of T tubule network
c. Ability to contract in the absence of an action
potential
d. Dependence of contraction on Ca+2 ions
2/ Which of the following conditions causes bleeding tendency
after prolonged exposure to hazardous irradiation?
Select one: _
a. Vitamin K deficiency _
b. Hemophilia L
c. Chronic liver...
The biggest advantage of the two rules to detect the
most profitable output level is that these rules tell us
that
There are always two output levels at which marginal
revenue is equal to marginal cost and we need to identify the
correct profit-maximizing level of production by using these two
rules.
When the two rules are satisfied we know that the
maximum total profit cannot be negative.
In general, marginal revenue equal to marginal cost
does not guarantee profit-maximization....