Vet tech bones and muscles

Created by amyshields 

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38 terms

masseter

elevates the mandible to close jaw when chewing.

intercostals

Expiratory (exhale)

diaphram

Inspiratory (inhale)

exturnal obliques

flexes vertebral column/abdominal press

latissimus dorsi

draws limbs caudally, flexes shoulder joint

pectorals (transverse and descending)

adducts the thoracic limb

triceps brachii

extends elbow, flexes shoulder

biceps brachii

flexes elbow, extends shoulder

biceps femoris

extends hip, and tarsus. Flexes stifle

semitendonosis

extends hip, and tarsus. Flexes stifle

gracialis

adducts limb, flexes stifle,extends hip and hock.

satorius

flexes hip, extends stifle

quadriceps femoris

extends stifle, flexes hip

linea alba

Left and right parts of each oblique muscle come together on the ventral midline

brachiocephalicus

pulls limb forward, extends shoulder, moves head and neck laterally

Origin

Site of muscle attachment that is more stable.
The origin has the least amount of movement during muscle contraction.

incertion

The site of muscle attachment that undergoes the most movement during contraction.

3 types of muscle

smooth, cardiac, skeletal.

Cutaneous Muscles

Thin, broad, superficial muscles
Found in the fascia just beneath the skin
Little or no attachment to bones
Serve to twitch the skin

aggonist

muscle that produces a desired movement.

antagonist

opposes the action of a prime mover

fixator muscles

stabilize joints to allow other movements to take place.

muscle contraction phase

latent, contract, relax

Myocytis

ripping of muscle

Hypertrophy

over extended muscle

Atrophy

wasted muscle from not being used

paralysis

Loss or impairment of motor (muscular) function resulting from a lesion of nervous or muscular in origin

Curare Chondrodendron

Prevents nerve impulses from reaching the neuromuscular junction

Clostridium tetani - Tetanus

Produces the toxin tetanospasmin
Inhibits some of the nerve impulses from reaching the neuromuscular junction

Clostridium botulinum - Botulism

Interferes with the release of acetylcholine
Nerve can not contract muscle

Bone function

Support
Protection
Storage
Movement
Blood cell formation

articular cartilage

around the ends where the joint meets

Epiphyseal Plate

Growth plate

diaphysis

long portion of a bone.

epiphysis

end of bone

periosteum

layer surounding diaphysis- contains osteoblast

medullary cavity

holds bone marrow

condyle

large round articular surface

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