Muscle Pig Dissection

Human Physiology

Pectoralis Major

Acts to draw the forelimb toward chest

Pectoralis Minor

To adduct and retract forelimb

External Obliques

Compress abdominal wall and aid in flexion of trunk

Gracilis

Adducts the thigh

Brachiocephalic

Moves the forelimb anteriorly

Gastrocnemius

Extensor of ankle

Tibialis Anterior

Flexes Ankle

Triceps brachii long head
Triceps brachii lateral head
Triceps brachii medial head

Extends forelimb at elbow

Biceps femoris, Semi-tendinosus, semi-membranous

What three muscles are part of the hamstring

What do the hamstrings action do?

Retracts knee, flexes shank, and abducts thigh

Brachiocephalic, Acromiotrapezius, and Spinotrapezius

Three muscles in the trapezius

Brachiocephalic

Moves forelimb anteriorly

Acromiotrapezius

Pull scapula to mid-dorsal line

Spinotrapezius

Pulls the scapula mid-dorsally

Biceps Brachii

Primary flexor of lower foreleg

Rhomboideus Capitis and Rhomboideus (cervical/thoracic)

Act upon scapula & hold it in place & draw it forward

Spinalis, Longissimus, and Illiocostalis

Extensor dorsi communis

Extensor of the spine

What is the action of the Extensor dorsi communis?

Sartorius and Gracilis

What two muscles does the femoral artery pass between?

Transect

Cut across at an angle

Reflect

Fold/move a structure to expose something that was cut underneath it

Dissect

Cut open and seperate tissues

Intercostal Muscles

What are the major muscles of respiration?

Brachial Cephalic

What is another name for the clavotrapezius muscle?

-rectus femoris
-vastus lateralis
-vastus medialis
-vastus intermedius

What 4 muscles makes up the Quadriceps femoris (in humans)?

Ertecor Spinae

What muscle in humans is equal to the Extensor dorsi communis in pigs?