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Tania Torres-Gomez P.1 Muscular - Coggle Diagram
Tania Torres-Gomez P.1 Muscular
Functions
Produce movement
Maintain posture and body position
joints
generate heat- contract
3 types of muscles
Skeletal
movement
Cardiac
involuntary movement
smooth muscle
digestion and nutrient collection
Skeletal Muscles
Pectoralis Major
Serratus anterior
Rectus abdominal
Lactissimus dorsi
Illiopsoas
Sartorius
Adductor longus
vastor lateralis
fibularis longus
vastus intermedius
Sternocleidomastoid
trapezius
deltoid
brachioradialis
flexor carpi radialis
Palmaris longus
Gracilis
rectus femoirs
rastus medialls
gastrocnemius
extensor digitorum longus
vastus lateralis
trapezius
infraspinatus
teres major
latissimus dorsi
gleteus maximus
semitendiosus
gracilis
hamstring
gastrocemius
Temporalis
Zygomaticus
oris
frontalis
oculi
masseter
platysma
Sarcomere
myofilaments
thin (myosin) and thick (actin) filaments
mitochondria
dispersed through muscle fibers- supplies energy, ATP, for muscle contraction
sarcoplasmic reticulum
network of tubes that run parallel to myofilaments
transverse tubules
run perpendicular to filaments
sarcolemma
membrane covers entire muscle fiber
Z line
boundary of the sarcomeres
Neuromuscular junction
AP arrives at axon terminal
voltage-gated calcium channels open, calcium enters motor neuron
calcium entry causes release ACh neurotransmitter into synpatic cleft
ACh diffuses across ACh receptors on sarcolemma
ACh connects to receptors, opens gates, allowing Na + enter resulting end plate potential
Acetylcholinesterase degrades ACh