KINE 433 Exam 2 2025/2026 update | Actual comprehensive
real exam questions and correct answers (complete verified
solutions) ASSURED SUCCESS|GRADED A+!!
what does the alpha motor neuron release once it gets to the
axon terminal? -
ANSWER-ACh creating a
chemical signal
what is a typical amount of muscle fibers you would find in
a motor unit? -
ANSWER-<300
type I
>300 type
IIa
>300 type
IIx
how does the motor neuron size compare for different
muscle fibers? -
ANSWER-type II a and x are larger, type I
is smaller
,what are the tiny sacs that are located in the axon terminal of
the motor neuron
and contain ACh? - ANSWER-
vesicles
what kind of signal(s) are created during muscle
contraction? - ANSWER-
electrical, chemical, then back to
electrical
what happens after ACh is released from the alpha motor
neuron? - ANSWER-
ACh binds to the nicotinic receptors on the cell membranel
of the skeleta
muscle cell, converting the signal back to an
electrical one
what are some characteristics of a relaxed muscle? -
ANSWER-low Ca++
levels, active site is blocked, myosin can't
bind to actin
, what are some characteristics of a contracting muscle? -
ANSWER-Ca++ has been released from the SR, Ca++ binds to
troponin, creating an active site for
myosin to bind to actin, myosin head
attatches
what are some characteristics of a fully contracted muscle? -
ANSWER-myosin
head tilts, ATP binds to myosin head, myosin
head dettaches
what is the correct loading does of creatine supplements? -
ANSWER-20g/day
for 6
days
what is the correct maintenance does of creatine? - ANSWER-
3-5g/day
how do creatine supplements improve performance? -
ANSWER-total work
increases
what is glycolysis? - ANSWER-a mechanism of glucose
being broken down in a
real exam questions and correct answers (complete verified
solutions) ASSURED SUCCESS|GRADED A+!!
what does the alpha motor neuron release once it gets to the
axon terminal? -
ANSWER-ACh creating a
chemical signal
what is a typical amount of muscle fibers you would find in
a motor unit? -
ANSWER-<300
type I
>300 type
IIa
>300 type
IIx
how does the motor neuron size compare for different
muscle fibers? -
ANSWER-type II a and x are larger, type I
is smaller
,what are the tiny sacs that are located in the axon terminal of
the motor neuron
and contain ACh? - ANSWER-
vesicles
what kind of signal(s) are created during muscle
contraction? - ANSWER-
electrical, chemical, then back to
electrical
what happens after ACh is released from the alpha motor
neuron? - ANSWER-
ACh binds to the nicotinic receptors on the cell membranel
of the skeleta
muscle cell, converting the signal back to an
electrical one
what are some characteristics of a relaxed muscle? -
ANSWER-low Ca++
levels, active site is blocked, myosin can't
bind to actin
, what are some characteristics of a contracting muscle? -
ANSWER-Ca++ has been released from the SR, Ca++ binds to
troponin, creating an active site for
myosin to bind to actin, myosin head
attatches
what are some characteristics of a fully contracted muscle? -
ANSWER-myosin
head tilts, ATP binds to myosin head, myosin
head dettaches
what is the correct loading does of creatine supplements? -
ANSWER-20g/day
for 6
days
what is the correct maintenance does of creatine? - ANSWER-
3-5g/day
how do creatine supplements improve performance? -
ANSWER-total work
increases
what is glycolysis? - ANSWER-a mechanism of glucose
being broken down in a
