Ch. 9a quiz review, mucles Flashcards
The outermost layer of connective tissue surrounding a skeletal muscle
epimysium
transmits muscle impulses into the cell interior
transverse tubules
the functional unit of muscle contraction
sarcomere
store in vesicles in motor neuron endings
neurotransmitters
this enzyme serves to decompose acetylcholine in the synaptic cleft
acetylcholinesterase
at neuromuscular junction, the muscle fiber membrane folds, forming a
motor end plate
the toxin that causes ______ prevents the release of aacetylcholine
botulism
the functional connection between a neuron and a skeletal muscle fiber
synapse
the characteristic of reddish brown color of skeletal muscle comes from
myoglobin
a motor neuron and the muscle fibers connected to it are referred to as a
motor unit
the minimum strength of stimulation required to contract a muscle fiber
threshold stimulus
a recording of the events of a twitch
myogram
contraction of a muscle without a change in length
isometric contraction
an example of partial but sustained contraction
muscle tone
the increase in the number of motor units activated as a result of more intense stimulation
recruitment
a band of trough connective tissue to which abdominal wall muscles attach
linea alba
muscle located in the cheek
buccinator
adducts and flexes the arm
coracobrachialis
forms part of the calf
soleus
where does the palmaris longus insert?
onto fascia
where is the triangle of auscultation (commonly used to hear sounds of respiratory organs) located
near the border of the trapezius and latissimus dorsi
a condition found in people with a deficiency of acetylcholine receptors
myasthenia gravis
separates individua muscle fibers/cells from eachother
endomysium
a forceful, sustained contraction
tetanic contractions
the combination of a series of witches to produce a more forceful contraction
summation
the rhythmic, wavelike motion produced by smooth muscles in tubular visceral organs is called
peristalsis
the muscle that covers the upper part of the cranium
epicranius
