Skeletal system/ Muscle shit Flashcards by Matthew Crofts

what is Excitability ( Irritability)?

The ability to contract in response to chemical and/or electrical signals eg
For a muscle to contract, its cells must be simulated, typically via nerve impulses, as messages from the CNS

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what is Contractibility?

The ability of a muscle to contract or shorten. “the all or none principle”

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what is Extendibility?

The capacity of a muscle to stretch to beyond its normal, resting length

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what is Elasticity?

The ability of a muscle to return for the original length after being stretched.

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what does the skeletal system?

Provides framework for the body and gives shape, protects vital organs, Eg cranium protects brain.

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what is a Agonist part?

A Prime mover

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What is a Fixator?

Hold area in place

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What is Synergist?

Assits movement by stabilising the surrounding area

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Biceps-Triceps

Top and underside of upper arm, Flexion/extension

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Pectorals-latissimus dorsi

Chest/lower back, Flexion/extension

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Anterior deltoids- posterior deltoids

shoulder, Flexion/ extension, rotation and circumduction

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Trapezius- deltoids

Top back, shoulders. Rotation and circumlocution

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Abdominous rectus-spinal erectous

upper abs-back, Rotation and circumlocution

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Left and right external obliques

Abs right and left, Rotation. Flexion/extension

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Quadriceps-hamstrings

legs, top of thighs. FLexion/Extension at hips and knee

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Tibialisis anterior- gastrocnemius

Front of shin, Flexion and extension

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what is Flexion?

a joint angle decreasing, ex bicep curl going up

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What is Extension?

a joint angle increasing ex bicep curling going down stretching bicep

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What is abduction?

Moving away from centre line ex upwards phase of a lat raise

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what is Adduction?

moving towards midline ex downwards phase of a lat raise

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What is rotation?

when a part turns on its axis ex head rotates on neck

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what is circumduction?

the circular movement of a limb ex Cricket bowling

what is Plantar flexion?

increasing angle between foot and leg. Kicking and afl football

What is Dorsi flexion?

decreasing angles between foot and leg ex sprinting

What is pronation?

Turning palm and forearm face down ex bouncing basketball

What is supination?

turning your forearm face up, volleyball recieve

what is the movement and location of Ball and socket?

Location: hip and shoulder Ball of one fits into socket of another stable movement in several directions flex/external

What is the loaction and movement of The Hinge

Location: Knee,elbows,fingers,toes when bones slide across eachother

where is the saddle located and what is its movement?

Location: thumb Kind of like a straddle or rider on a saddle creates bending motions in several directions

Where is the pivot and what is its movement?

Location: Cranium and twist of radius and ulna/ elbows Allows one bone with a ring shaoed structure to pivot around another. Creates turning motion without sideways displacement.

what type of joint is in the shoulder and what movements are possible ?

Ball and socket and movements include: circumduction flex/ext and rotation

what type of joint is in the Elbow and what movements are possible ?

Pronation and supination and hinge pivot

what type of joint is in the Wrist and what movements are possible ?

Gliding oviod and movements include circumduction lateral and linear raise and rotation

what type of joint is in the shoulder hip and what movements are possible ?

Flexion and extension, abduction and adduction, joint location: Ball and socket

what type of joint is in the Knee and what movements are possible ?

Joing: Hinge movement is flexion iand extenion

what type of joint is in the Ankle and what movements are possible ?

Joint is hinge gliding movement is dorsi plantar

what is Trapezius origin and insertion point?

Origin Cranium vertebrae Insertion tarsal

what is Latissimus dorsi origin and insertion point?

Origin Vertibrae/pelvis Insertion Humerus

what is pectorials groupd origin and insertion point?

origin Clavicle/sternum/ribs insertion Humerus

what is abdominal group origin and insertion point?

origin Pelvis insertion ribs

what is Intercostals origin and insertion point?

Ribs fot both

what is Deltoid origin and insertion point?

ribs for both

what is Biceps origin and insertion point?

Origin Scapula insertionulna/radius

what is Triceps origin and insertion point?

origin Scapula/humerus insertion ulna

what is Gluteal group origin and insertion point?

origin pelvis insertion femur

what is Quadriceps origin and insertion point?

origin: femur/pelvis insertion tibia

what is Hamstring origin and insertion point?

origin: femur/pelvis insertion tibia

what is Adductor group origin and insertion point?

Origin pelvis insertion femur

what is Tibialisis origin and insertion point?

origin tibia insertion metatarsals

what is Gastrocnemius origin and insertion point?

origin femur insertion tarsals

Soleus origin and insertion

origin Fibula/tibia insertion tarsals

what does origin mean?

the attatchment of a muscle to a bone that does not move upon contraction at the pralimal end ( closer to middle)

what does insertion mean?

The attatchment point of a muscle that moves when contracted at the distal end ( far from middle)