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ANS 214L Lab 6

Skeletal Muscles of the Pig

hypo- under,less
infra- below
inter- between
-lemma sheath,or husk
mega-,megalo- large
Myo- Muscle
post- after
semi- half
supra- above
striation of smooth muscle none
contraction of smooth muscle involuntary
location of smooth muscle GI, reproductive, ureters, blood vessels
arrangement of smooth muscle circular and longitudinal layers, individual cells
nucleus of smooth muscle single nucleus, centrally located
striation of cardiac muscle yes
contraction on cardiac muscle involuntary
location of cardiac muscle heart
nucleus of cardiac muscle 1, 2, or 3 nuclei, centrally located. majority become binucleated within a few weeks of life
striation of skeletal muscle yes
contraction of skeletal muscle voluntary
location of skeletal muscle attached to bones
arrangement of skeletal muscle longitudinal layers, elongated cells=muscle fibers
nucleus of skeletal muscle mulinucleated, peripherally located
peristalsis progressive alternating wave of coordinated contraction and relaxation of smooth muscle. result-movement of material
segmentation stationary rhythmic contraction and relaxation of circular intestinal smooth muscle. result-mixing
functions of the skeletal muscle maintain posture (hold the body erect), movement
what muscle is located on the back of the scapula? supraspinatus
Biceps femoris on lateral part of hind leg
Cutaneous trunci directly under skin, horizontal striations, and is usually separated with the skin
Gastrocnemius in the middle of the hind leg and contracts when you move leg
Gluteus group located anterior of tail and is dark pink in color
Gracilis on the medial part of the hind leg and is a thin sheet
Infraspinatus below the scapula ridge
Latissimus dorsi located caudal of the shoulder and the striations fan out caudal/dorsal
Longissiums runs along the exterior of the spine
Obliquus externus abdominis located lateral of rectus abdominis and striations run diagonally cranial/dorsal
Pectorales profundi wraps around the medial part of front legs
Quadriceps femoris located near stifle on cranial part of the hind leg
Rectus abdominis located in the stomach region, your "abs"
Semimembranosus located on inner leg, lateral to Gracilis
Semitendinosus located on caudal part of hind leg, below the tail, and it is tendon like
Serratus ventralis medial, beneath the Latissimus dorsi, large white lines make it look like "knuckles" or "serrated"
Supraspinatus located in front of the scapula ridge
Trapezius located dorsal of the shoulder and looks like a large dark triangle
Triceps group located on caudal part of the front leg
Subscapularis located on the back of the scapula
Psoas major begins at the medial surface caudal to the last rib and ventral to the vertebrae
Created by: adekkers



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