muscles 1 quiz Flashcards
a-
not
algia
pain
apo
from
dys
bad, difficult
endo
within
graph
to write
hyper
above, excessive
iso
equal
lemma
skin, rind
metric
measure
myo
muscle
mys
muscle
neurosis
nerve
sacro
flesh
tetan
ridged
tonic
tension
troph
growth in size not number
tropo
change or turning
The three types of muscular tissue
Skeletal
Cardiac
Smooth
***list the 5 functions of muscle tissue
motion, stabilizing body position, regulating organ volume, movement of substances within the body, thermogenesis
bonus question titian
______ is a form of thermogenesis which involves the involuntary contraction of skeletal muscles to generate heat
shivering
note that ______ refers to temperature regulation of the body involving both sweating and shivering
thermoregulation
the skeletal muscle cell is also called a _____
muscle fiber
the muscle cell membrane is called the ______, and its cytoplasm is called _____
sarcolemma, sarcoplasm
slide 8 image on quiz
_____ are sheets of fibrous connective tissue deep to skin that surround muscles or other organs
Fascia
also known as the subcutaneous layer, found beneath the skin separating it from underlying muscle
Superficial Fascia
_____ dense, irregular connective tissue that lines the body wall and holds muscles together into muscle groups
Deep Fascia
____Circles whole muscle beneath the deep fascia
Epimysium
______Separates 10-100 muscle fibers into bundles called fascicles
Perimysium
_____ Separates individual muscle fibers from one another
Endomysium
_____Extension of the epi- peri- and endomysium that together form a chord of dense, regular connective tissue that attach a muscle to a bone
Tendon
______Broad, flattened tendon
Aponeurosis
motor axons branch into clusters of synaptic end bulbs innervating several different muscle fibers the sum of which is called a _____
motor unit
The junction between motor neurons and skeletal muscle fibers is called a ______
neuromuscular junction
Motor neurons are found in the _____ and each muscle fiber is innervated with one branch of an axon
endomysium
capillaries are found in the ______ and each muscle fiber is closely associated with at least one capillary
endomysium
The skeletal muscle cell is also called a ____
muscle fiber
the muscle fiber cell membrane is called the ____, and its cytoplasm is called _____
sarcolemma, sarcoplasm
skeletal muscle cells are _____ with nuclei at periphery of cell; they form by the fusion of embryonic myoblasts
multinucleated
_____tubules are perpendicular invaginations of the sarcolemma that penetrate into the cytoplasm which open to the outside and are thus filled with extracellular fluid
T (transverse)
When an action potential spreads along the sarcolemma, it travels down the T tubules to the _____
sarcoplasmic reticulum
_____ is the the cytoplasm of a skeletal muscle
Sarcoplasm
______ are bundles of microfilaments (actin and myosin)
myofibrils
The striations of skeletal muscle fibers are due to the repeating arrangement of ______
myofilaments
myofilaments are the contractile elements within _____
myofibrils
______are composed of the protein myosin
thick filaments
______ are composed of actin, troponin and tropomyosin
thin filaments
filaments do not extend the length of the muscle, but rather they overlap each other and are arranged into short units called _____
sarcomeres.
spring like filament
titin
3 structural proteins
titin, myomesian (midline), dystrophin
2 regulatory proteins
troponin tropomyosin
actin and Myosin are a ____
motor protein
The twisted shafts of the golf clubs_____ point toward the M line
(myosin tail)
the heads of the golf club______project away from the M line
(myosin heads)
_____ makes up part of the thin filaments
Actin
____ and ____twist around the helical actin strand to cover up the myosin-binding sites
Troponin and tropomyosin
____ is a very large structural protein extending from Z disc to M line in order to anchor the sarcomere
Titin
____ makes up the “M” line. These molecules join to titin molecules as well as connect adjacent thick filaments to each other - stabilizes the sarcomere
Myomesin
____ anchors the thin filaments to integral membrane proteins in the sarcolemma
Dystrophin
sarcomeres are the basic functional unit of a muscle; _____ are what shorten
sarcomeres
____ separate one sarcomere from the next, found at the ends of thin filaments
Z discs:
____ dark line in the middle of the sarcomere where supporting proteins connect adjacent thick filaments
M line:
