1. The function of T tubules is to help distribute the electrical signal to cont
ID: 3478697 • Letter: 1
Question
1. The function of T tubules is to
help distribute the electrical signal to contract throughout the muscle fiber.
bind muscle fibers together at the neuromuscular synapse.
bind actin and myosin molecules together.
separate one muscle fiber from another to facilitate partial contraction of a muscle.
do none of the above.
2)The lacrimal glands
are located in pockets of the lacrimal bone.
produce watery, slightly alkaline secretions.
function only during stress.
produce less fluid than the ocular conjunctiva.
All of the answers are correct.
3)The oblique and rectus muscles do which of the following?
occur in the neck.
provide walls for the abdominal cavity.
form the walls of the thoracic cavity.
help to position the vertebral column.
all of the above.
4)The sarcolemma is (the)
extension of the skeletal muscle plasmalemma into the cell.
cytoplasm of skeletal muscle fibers.
plasmalemma of skeletal muscle fibers.
endoplasmic reticulum of skeletal muscle fibers.
none of the above.
5)The size difference between the tympanic membrane and the oval window causes vibrations to
become more frequent.
change tone.
amplify.
become faint.
None of the answers are correct.
6)The subclavius muscle
is innervated by the dorsal scapular nerve.
elevates the scapula.
originates from the first three ribs.
inserts on the clavicle.
does all of the above.
help distribute the electrical signal to contract throughout the muscle fiber.
bind muscle fibers together at the neuromuscular synapse.
bind actin and myosin molecules together.
separate one muscle fiber from another to facilitate partial contraction of a muscle.
do none of the above.
2)The lacrimal glands
are located in pockets of the lacrimal bone.
produce watery, slightly alkaline secretions.
function only during stress.
produce less fluid than the ocular conjunctiva.
All of the answers are correct.
3)The oblique and rectus muscles do which of the following?
occur in the neck.
provide walls for the abdominal cavity.
form the walls of the thoracic cavity.
help to position the vertebral column.
all of the above.
4)The sarcolemma is (the)
extension of the skeletal muscle plasmalemma into the cell.
cytoplasm of skeletal muscle fibers.
plasmalemma of skeletal muscle fibers.
endoplasmic reticulum of skeletal muscle fibers.
none of the above.
5)The size difference between the tympanic membrane and the oval window causes vibrations to
become more frequent.
change tone.
amplify.
become faint.
None of the answers are correct.
6)The subclavius muscle
is innervated by the dorsal scapular nerve.
elevates the scapula.
originates from the first three ribs.
inserts on the clavicle.
does all of the above.
Explanation / Answer
1) The function of T tubules is to
help distribute the electrical signal to contract throughout the muscle fiber.
2) The lacrimal glands
produce watery, slightly alkaline secretions.
3) The oblique and rectus muscles do which of the following?
provide walls for the abdominal cavity.
4) The sarcolemma is (the)
plasmalemma of skeletal muscle fibers.
5)The size difference between the tympanic membrane and the oval window causes vibrations to
amplify
6)The subclavius muscle
inserts on the clavicle.
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