Muscles

3 Muscle Types

(Use drop down)

Smooth Muscle
Cardiac (Heart) Muscle
Skeletal Muscle

White Meat VS Red Meat

White meat comes from areas which recieve less exercise and darker red meat comes from areas which recieve more. Color comes from the amount of myoglobin within the muscle.

Insert Pictures of Chicken Cuts

Muscles involved in flight (Wing)

https://www.youtube.com/watch?v=aFdvkopOmw0

M. Superficial Pectoral (Pectoralis Major)

The pectoralis major is the biggest muscle in the chicken's body. It plays a major role in carrying out the main function of the wing. The pectoralis major is an adductor muscle that pushes the wing downward. The pectoralis major is located ventrally to each breast bone. This is why the pictured image is called a "chicken breast" when speaking in terms of human consumption.

Origin: Clavicular and sternal regions

Insertion: Greater tubercle of the humerus

m. supracoracoideus (Pectoralis Minor)

The Pectoralis minor is located dorsal to the pectoralis major and has an opposite function. This muscle is responsible for lifting the wing during the upward movement. It is the smaller and thinner pectoral muscle hence the given name (minor). This muscle is also very common for human consumption.

Origin: Sternal body

Insertion: Dorsal side of the proximal humerus

M. biceps brachii

The bicep brachii is located ventral to the humerus and when contracted it acts as a flexor muscle of the wing. This muscle pictured is responsible for the flexion of the elbow joint.

Origin: Attachment site of the shoulder (tendon that connects the supracoracoideus to the humerus)

Insertion: Attachment site of the elbow (distal humerus/proximal radius)

m. triceps brachii

The triceps brachii is located dorsal to the humerus and when contracted it acts as an extensor for the elbow joint. The function of the muscle pictures is to flex the shoulder and extend the forearm.

Origin: Attachment site of the shoulder (tendon that connects the supracoracoideus to the humerus)

Insertion: Attachment site of the elbow (distal humerus/proximal radius)

m. deltoideus

The deltoideus is a muscle within the shoulder joint that flexes the shoulder and rotates the wing outwards. This muscle offers support to the shoulder joint of the wing.

Origin: Clavicle, acromion, and scapular spine

Insertion: Deltoid tuberosity