Chicken dissection Analysis

In this lab we had a headless chicken and had to make cuts and insersions. We were given a raw foster farms chicken and had to identify muscles and tendons. The movement occured at the joints. One end was connected to a tendon which attach our muscles to bones. We had clear views of the flexor carpi, ulnaris, and the brachioradalis. These play big roles in the wings. The chicken had massive back muscles. We learned what causes the shin splints and saw it in our chicken The difference is that there is no movement at the origin and at the insersion there is movement because of the contractions. In the chicken the Gastrocenemius is the same as our calf muscle in many ways. It gives the same function and location. ONly thing is that the one in humans is much larger due to proportion. Humans have a rectus femoris which is similar to the chickens  quadreceps femoris. It is flexible and gives a stable walking function. The only difference is the way the muscle bends and contrasts. Another similarity is that chickens and humans both have a very similar deltoid. This is the shoulder bone.

  

                        
         Pectoralis Major:Pull the wing vertically, powering the flight
Pectoralis minor:Long tendon and is distal end runs through shoulder joint  and attaches the dorsal side of humerous
Trapezius: Perpendicular from the backbone to the shoulder of the bird and pull shoulder back
Latissimus Dorsi:Directly distal to the trapezius on the birds and humans back.
Deltiod: Muscle on the center top of the shoulder of both the bird and the human.
Biceps brachii: Cranial side of the upper wing or arm in birds and humans.
Triceps humeralis: Inferior side of the upper wing or or arm. Extends the wing.

Flexor carpi ulnaris: Runs from the back of the elbow to the side of the hand away from the thumb. Flexes the hand.
Brachioradialis: Largest muscle on the superior side closest to alula. Pulls back the hand.
Sartorius: Runs down the front edge of the thigh from the ilium to the knee in birds.
Iliotibialis: Covers the whole lateral side of the thigh in birds. Extends thigh and flexes leg.
Bicep femoris: Medial to the inferior section. It flexes the leg and is used for leg curls in humans.
Semimembranosus: Just inferior and medial to the biceps femoris and defines the caudal edge of the thigh in the bird.
Semitendinosus: It extends the thigh.
Quadreceps femoris: Lies on the inside of the thigh just medial to the sartorius in the bird. Flexes the thigh and extends the lower thigh.
Gastrocnemius: Primary muscle of the dorsal and medial sides of the drumstick. Extends the foot and flexes lower leg.
Peroneus longus: Primary superficial muscle on the lateral side of the drumstick in birds. Extends the foot.
Tibialis anterior: Larger than and directly under the peroneus longus in birds . It is smaller and runs up the lateral side of the lower leg in humans.