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Muscular Jasmine Valdez per.2 - Coggle Diagram
Muscular Jasmine Valdez per.2
names of all the skeletal muscles (including the facial muscles)
sternocleidomastoid (neck)
trapezius (next to the neck)
deltoid (shoulder)
biceps brachi (upper arm close to pit area)
Brachioradialis (part in front of the elbow)
Flexor carpi radialis (right next to the brachioradialis closer to ribs)
Palmaris longus (part closest to the ribs and palm of hand)
pectineous (inner thigh)
Rectus femoris ( middle of thigh)
Gracills (left side of thigh)
Soleus (inner calf)
Fibularis longus (outter calf)
Extensor digitorum longus ( middle of the calf)
Tibialis anterior (inner calf on the left sid eof bone)
Gastrocnemius (upper inner calf)
Vastus Lateralis (right outter side of thigh)
Liopsoes (inner right thigh close to abdomen)
Sartorius (outter layer of inner thigh)
Liopsoas (inner hip)
External Oblique ( sides of abdomen)
Rectus Abdominis (middle part of abdomen)
Serratus Anterior (pit area)
Pectoralis Major (chest area)
Trapezius (top of back)
Intraspinetus (back of pectoral area or chest area)
Teres Major (back of pit area)
Latissimus dorsal (back of abdomen)
Gluteus maximus (butt area)
Semitendinosus (back of middle part of thigh)
Semimembranosus (inner part of back of thigh)
Fibularis Longus (side of ankle)
Biceps Fomoris (outter part of back of thigh)
Extensor Digitorum (inner part of wrist)
Extensor Carpi Radialis longus (outter side of middle part of arm)
Triceps brachii (inner upper arm)
Rhomboid Major (middle par of back)
Frontalis (forehead area of face)
Tempralis (sid eof face)
Orbicularis oculi (area around eye)
Masseter (part of chin clossest to ear)
Sternocleidomastoid (neck area)
Orbicularis oris (area around mouth)
Zygomaticus (area under eyes that attaches from ear to outter layer of lips)
Major functions of the muscular system
movement of bones at joints, maintenance of posture
movement of viscerra persitalsis, vasoconstriction
pumping action of the heart
3 types of muscles and their functions
Skeletal provides movement of bones at joints, maintenance of posture
Smooth provide movement of viscerra peristalsis vasocronstricton
Cardiac provides the pumping action of the heart
sarcomere
are joined end to end
extend from z-line to z-line
I bands are made up of actin filaments which are anchored to the z-line
A-bands are made up of overlapping thick and thin filaments
m-line is the center of the H zone which consists of proteins that hold myosin in place.
Neuromuscular junction
synapse is when each muscle fiber is functionally connected to the axon of a motor neuron
neurotransmitters are how the neuron communicates with the muscle fiber by chemicals
neuromuscular junction is a synapse between a motor neuron and a muscle fiber that is regulated
mitochondria synaptic vesicles storing neurotransmitters
motor end plate: sarcolemma tightly folded
synaptic cleft: the gap between the membrane of the neuron and muscle fiber
sliding filament theory of muscle contraction
contraction signal in the brain
brain sends signals to the motor neuron
Acetylcholine gets to the receptors and sends a signal to the muscle sarcolemma which causes an impulse
that impulse then travels down the membrane and into the transverse tubules
Once it gets to the transverse tubules it causes the calcium to be released
Then the calcium binds to actin and that causes it to change shape and become larger
That later leads to them binding together with multiple actin myofilaments
That change in shape then lets the myosin heads to form cross bridges connecting the actin myofilaments and myosin
The ATP energy is then used to create a "power stroke"
After the actin slides in and shortens or contrasts the muscle
action potential in a muscle fiber
Origin: the less movable end of the skeletal system
Insertion: the more movable end of the skeletal system
muscle contraction pulls insertion toward the origin some muscles have more than one insertion or origin
"biceps" means 2 origins od heads
both heads attach to portions of the scapula
insertion is radial tuberosity of radius
muscle located on anterior surface of humerus
action flexion of forearm at elbow
muscle coverings (TB fig. 8.1)
Fascia: these are layers of connective tissue that separate and surround the muscle
Tendons: extend beyond the ends of the muscle
Aponeuroses: when muscle are connected to each other
Epimysium: make fiscia blend and goes around each skeletal muscle
Perimystium: extend inward and surrounds bundles of skeletal muscle
Endomysium: covers each muscle cell