Muscle Tissue and Joints Flashcards
what are the 3 types of muscle tissue?
skeletal, cardiac, smooth
what are the 4 main functions of muscle tissue?
facilitate movement, open and close body passageways, thermoregulation, and maintaining posture/support for joints
where is skeletal muscle tissue located?
all throughout the body
what type of muscle tissue functions for movement under voluntary control?
skeletal
what type of muscle tissue has the appereance of very long, cylindrical cells, striations, and peripherally located multinucleated cells?
skeletal
where is smooth muscle tissue located?
GI, urinary , vascular tissue
what type of muscle tissue functions via contractions that control movement of material under involuntary control?
smooth
What type of muscle tissue has the appearance of short, spindle shaped cells that lack striations and have a single, central nucleus?
smooth
where is myocardium (cardiac muscle) located?
muscle of the heart
what type of muscle tissue functions to contract the heart to pump blood under involuntary control?
myocardium
what type of muscle tissue has the appearance of short, bifurcated cells with striations and centrally located mono- or bi-nucleus?
myocardium
what type of muscle tissue has intercalated discs?
myocardium
what do intercalated discs do?
rapid transport of impulse
what is responsible for the rapid transport of impulse in the myocardium?
intercalated discs
what are the 5 parts of skeletal muscle organization?
muscle, fascicle, muscle fiber (myocyte), myofibrils, myofilaments
what is the connective tissue that surrounds the whole muscle?
epimysium
what is the connective tissue that surrounds fascicles?
perimysium
what is the connective tissue that surrounds the muscle fibers?
endomysium
what is the term for repeating contractile units that give muscle the striated appereance?
sarcomeres
where are sarcomeres located?
myofibrils
what are the two myofilaments found in sarcomeres?
myosin and actin
what myofilament is thick?
myosin
what myofilament is thin?
actin
what is described as the linear contraction achieved by thick and thin myofilaments sliding against each other?
sliding filament mechanism
how do muscles move bones?
happens over at least one joint and is the brining of the insertion to the origin
what attachment of the muscle is less mobile?
origin
what attachment of the muscle attaches to the axial skeleton when crossing from axial to appendicular skeleton?
origin
what attachment of the muscle is the proximal attachment when taking about extremities?
origin
what attachment of the muscle is more mobile?
insertion
what attachment of the muscle attaches to the appendicular skeleton when crossing from axial to appendicular skeleton?
insertion
what attachment of the muscle is the distal attachment when talking about extremities?
insertion
muscle compartments are muscles with similar ____, ____, and/or ____
function, innervation, blood supply
what is another word for joint?
articulation
what is described as the place of contact between two or more bones?
joint
more planes of motions means _____ stability
reduced
what two ways increase stability?
muscular support and ligamentous attachment
mobility and stability have an ____ relationship
inverse
what are the 3 classifications of joints?
fibrous, cartilaginous, synvial
____ is the class of joints that are connected by dense regular connective tissue
fibrous
____ is the class of joints that are connected by plates of cartilage
cartilaginous
_____ is the class of joints with articular capsule with joint cavity
synovial
what are the 3 categories of fibrous joints?
gomphosis, sutures, syndemosis
what are the 2 categories of cartilaginous joints?
synchondrosis, symphysis
what are the 6 categories of synovial joints?
planar, hinge, pivot, saddle, condylar, ball-socket
between teeth and sockets is an example of what type of fibrous joint?
gomphosis
between skull bones is an example of what type of fibrous joint?
sutures
the membranes between tibia/fibula and radius/ulna are an example of what type of fibrous joint?
syndemosis
the epiphyseal plates and the 1st rib manubrium are examples of what type of cartilaginous joint?
synchondrosis
what type of cartilaginous joint is connected by hyaline cartilage?
synchondrosis
intervetebral discs and pubic symphysis are examples of what type of cartilaginous joint?
symphysis
what type of cartilaginous joint is connected by fibrocartilage?
symphysis
what type of synovial joint movement is when the bones slide across each other on a plane and are not able to move around an axis?
nonaxial
what type of synovial joint movement is movement around one axis?
uniaxial
what type of synovial joint movement is movement around 2 axes/planes and is front to back and side to side?
biaxial
what type of synovial joint movement is movement around all 3 axes/planes and is front to back, side to side, and rotating/twisting?
multiaxial
intercarpal and intertarsal joints are examples of what type of synovial joints?
gliding/planar
the elbow, knee, and interphalangeal joints are examples of what type of synovial joints?
hinge
the radioulnar and atlantoaxial joints are examples of what type of synovial joints?
pivot
metacarpophalangeal and metatarsophalangeal joints are examples of what type of synovial joints?
condylar
the thumb (first carpometacarpal) joint is an example of what type of synovial joint?
saddle
the shoulder and hip joints are examples of what type of synovial joints?
ball and socket
gliding/planar joints move _____
as flat surfaces gliding across each other
hinge joints move around ____ axis
a single
pivot joints move around ____ axis
a central
condylar joints move around ____ axis
biaxial
saddle joints adjoin bones that have ___ and ____ surfaces
convex, concave
ball and socket joints move around _____ axis and have the ____ range of motion
3, greatest
flexion _____ the angle
decreases
extension ____ the angle
increases
abduction is movement ______ the midline
away
adduction is movement ____ the midline
toward
lateral rotation is movement ______
outward
medial rotation is movement _____
inward
supination is rotating the _____ ______
palms, anteriorly
pronation is rotating the ____ ______
palms, posteriorly
inversion is rotating the ____ ______
sole of the foot, inward
eversion is rotating the _____ _____
sole of the foot, outward
elevation is movement ______
superiorly
depression is movement _____
inferiorly
What are some tissues that muscles attach to?
bone, skin, etc.
Allowing blood vessels to constrict and relax are examples of how muscles do which of their functions?
blood circulation
What is the purpose of sphincter muscles?
contract to prevent passage, relax to allow for waste elimination
What will your muscle tissues cause you to do if you need help with thermoregulation?
shiver
Cardiac muscles are _____ to allow cells to _____ for impulse conductions
bifurcated, interact with each other
The myocardium is the _____ layer of the heart
middle
The middle layer of the heart is the _____
myocardium
_____ are the contractile units of muscle fibers
sarcomeres
____ sarcomeres make the muscle fiber long, while _____ sarcomeres make the muscle fiber short
relaxed, contracted
The axial skeleton is the ____ bones
central
The appendicular skeleton is the bones of the _____
extremeties
The muscle between teeth and sockets are an example of what type?
gomphosis
Skull bones are connected by what type of joints?
sutures
Syndesmosis are the joints _____
between bones
Ligaments are made of _____ connective tissue
dense regular
Wrist and ankle bones are connected by what type of joint?
gliding/planar
The muscle that makes your head move side to side (atlantoaxial joint C1-C2) is what type of joint?
pivot
What type of joint allows fingers to move side to side and flex?
condylar
Flexion and extension happen in what plane?
saggittal
Abduction and adduction happen in what plane?
coronal
When your forearm is in supination, the bones are _____
parallel
When your forearm is in pronation, the bones are ____
crossed-over
The ___ ____ is the neurons control center that receives, integrates, and sends out nerve impulses
cell body
The ____ _____ carries sensory info from skin to cell body
peripheral
The _____ detects touch, pain, temp, and vibrations of skin
dendrites
The ______ ______ sends impulses from the cell body the the CNS
central process
The ____ ____ _____ is where a central and peripheral process attach to the cell body
short single process
The _____ transmits nerve impulses away from the cell body to other neurons, muscles, or glands
axons
99% of neurons are what type?
interneurons
The ____ ___ _____ controls substances that can leave capillaries and enter the fluid surrounding neurons
blood brain barrier
Sodium enter the neuron makes the inside ______ relative to the outside
positive