muscular system Flashcards
name two different types of muscle?
voluntary and involuntary
what are voluntary muscles?
muscles that are under your control help move the body
at are involuntary muscles?
internal organs without effort eg. blood vessels control the amount of blood flowing to your voluntary muscles (cardiac muscle heart never gets tired)
name the seven front muscles of the body?
pectoralis major
deltoid
biceps
external obliques
hip flexors
quadriceps
tibialis anterior
what do the pectoralis major, deltoid and biceps do?
pectoralis major- adduction and flexion at the shoulder
deltoid- flexion extension and abduction a the shoulder
biceps- flexion at the elbow
what do the external obliques and
hip flexors do?
external obliques - rotation and flexion at the waist
hip flexors- flexion at the hip
what do the quadriceps and
tibialis anterior do?
quadriceps - extension at the knee
tibialis anterior - dorsi- flexion at the ankle
name the five back muscles of the body?
triceps
gluteus maximus
latissimus dorsi
hamstrings
gastrocnemius
what do the triceps, gastrocnemius and hamstrings do?
triceps - extension at the elbow
gastrocnemius - plantar-flexion at the hip
hamstrings - flexion at the knee
at do the latissimus dorsi and gluteus maximus do?
latissimus dorsi - extension, adduction at the shoulder
gluteus maximus - extension at the hip
what are antagonistic muscles?
antagonistic muscles are wo pairs of muscles that work against each other. (contracts (agonist) and relaxes (antagonist))
name four antagonistic muscle pairs?
knee- hamstrings and quadriceps
elbow - biceps and triceps
hip- hip flexors and gluteus maximus
ankle - gastrocnemius and tibialis anterior
describe the flexion and extension at the knee?
flexion -
agonist - hamstrings
antagonist - quadriceps
extension-
agonist - quadriceps
antagonist - hamstrings
describe the flexion and extension at the elbow?
flexion -
agonist - bicep
antagonist - tricep
extension-
agonist - bicep
antagonist - tricep
describe the flexion and extension at the hip?
flexion -
agonist - hip flexors
antagonist - gluteus
extension-
agonist - gluteus
antagonist - hip flexors
