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Elena Baechli (Period 5) Muscular System - Coggle Diagram
Elena Baechli (Period 5) Muscular System
3 types of the muscles and functions
skeletal
attached to the bones
attached to the skin
mutiple straiations
cylindrical
cardiac
walls of the heart
branching
keeping the heart pumping
smooth
airways
large arteries
spindle shaped
single
Neuromuscular junction steps
Step 3
due to the calcium, synaptic vesicles release actylcholine into synaptic cleft
Step 4
the acetylcholine bonds to the acetycholine receptors inside the receptors are ligand-gated cation channels that open up
Step 5
sodium ions enter through ligand-gated channels while potassium ions exit
Step 2
calcium channels open in axon terminals letting calcium ions in
Step 6
in order to stop muscle contraction, acetycholine is broken by acetylcholinestrance that becomes acetic acid and choline
Step 1
action potential travels down to the axon terminal
muscular disorder
Muscular dystrophy
muscle weakness
atrophy
Myalgia
muscle pain
Myasthenia
disorder
blocks neurotransmitters
Cerebral plays
spastic paralysis
Myositis
inflammation of the muscle
major functions
produce movement
maintain posture/body position
stabilize joints
generate heat as they contract
Sacromere
a structural unit of a myofibril in striated muscle, consisting of a dark band and the nearer half of each adjacent pale band
apart of myofibril
Skeletal muscles
head
frontalis
zygomaticus
orbicularis oris
occtpails
orbcularis oculi
massester
temporalis
Lower limb
semtendorsus
extensor digatorium longus
tibialias anterior
fibutaris longus
vastus laterialis
rectus femoris
satouris
gracillis
adducter
vastus medialis
gastrocnemius
soleus
biceps femourus
semembranosus
upper limb
biceps brachli
brachiordialis
brachais
adomen posterior
trapezius
infraspintus
latissimus dorsi
teres major/minor
rhomboid
gluteus medina
abdomen anterior
external oblique
rectus abdominas
deltoid
serratus anterior
action potential in muscle fiber
starts up nueromuscular junction
sliding filament theory
ATP in myosin head turns to ADP and Pi
causes myosin head to extend and attach to actin
forms cross bridge
acttion called power stroke happens
myosin pulls actin to M line
ADP and Pi are released until myosin fends ATP again
Muscle covering
perimysium
fibrous
surrounds fasciles
endomysiam
fine areolar
covers individual muscle fibers
epimysium
dense irregular
covers entire muscle