Cat Muscle Anatomy

1. Where is the origin of the muscle Pectoantebrachialis?

Origin: Manubrium of the sternumInsertion: Flat tendon into the superficial fascia of the antebrachium above the elbowAction: Draws the forelimb toward the midline

Origin: Vertebral column Insertion: Cranium Action: Rotates the head

Origin: Scapula Insertion: Calcaneus Action: Flexes the foot

Origin: Ilium of the pelvis Insertion: Dorsal side of the neck Action: Extends the hindlimb

The correct origin of the muscle Pectoantebrachialis is the Manubrium of the sternum, not the other incorrect origins provided.

Explanation

The correct origin of the muscle Pectoantebrachialis is the Manubrium of the sternum, not the other incorrect origins provided.

2. Where is the origin and insertion of the Pectoralis Major muscle?

Origin: Cranial half of the sternum and midventral rapheInsertion: Proximal two-thirds of the shaft of the humerusAction: Draws the forelimb toward the midline and turns the manus forward

Origin: Distal end of the fibula; Insertion: Proximal end of the ulna

Origin: Proximal end of the tibia; Insertion: Distal end of the radius

Origin: Lateral side of the scapula; Insertion: Distal end of the femur

The Pectoralis Major muscle originates from the cranial half of the sternum and midventral raphe, and inserts into the proximal two-thirds of the shaft of the humerus. This muscle is responsible for drawing the forelimb toward the midline and turning the manus forward.

Explanation

The Pectoralis Major muscle originates from the cranial half of the sternum and midventral raphe, and inserts into the proximal two-thirds of the shaft of the humerus. This muscle is responsible for drawing the forelimb toward the midline and turning the manus forward.

3. What is the origin, insertion, and action of the Pectoralis Minor muscle?

Origin: From the scapula, Insertion: Medial border of the radius, Action: Flexes the forearm.

Origin: From the ilium, Insertion: Plantar surface of the calcaneus, Action: Extends the ankle joint.

Origin: From the ribs, Insertion: Dorsal border of the femur, Action: Extends the hindlimb backward.

Origin: From the six sternebrae and sometimes the xiphoid process, resulting in the appearance of several slips that appear to be separate musclesInsertion: Ventral border of the humberusAction: Draws the forelimb toward the midline

The Pectoralis Minor muscle originates from the six sternebrae and sometimes the xiphoid process, inserts on the ventral border of the humerus, and its action is to draw the forelimb toward the midline. The incorrect answers provided do not describe the correct origin, insertion, and action of the Pectoralis Minor muscle.

Explanation

The Pectoralis Minor muscle originates from the six sternebrae and sometimes the xiphoid process, inserts on the ventral border of the humerus, and its action is to draw the forelimb toward the midline. The incorrect answers provided do not describe the correct origin, insertion, and action of the Pectoralis Minor muscle.

4. Where is the Xiphihumeralis muscle located?

Origin: Posterior aspect of the fibula, Insertion: Along the lateral side of the tibia, Action: Aids in plantarflexion of the foot.

Origin: Lateral side of the scapula, Insertion: Along the dorsal border of the ulna, Action: Assists in flexing the wrist.

Origin: Inferior aspect of the iliac crest, Insertion: Across the patella, Action: Crucial for knee extension.

Origin: Median raphe in the vicinity of the ziphoid processInsertion: Along the ventral border of the humerusAction: Synergistic with teh pectoralis minor in drawing the forelimb toward the midline

The Xiphihumeralis muscle originates near the xiphoid process, inserts along the humerus, and works with the pectoralis minor in drawing the forelimb toward the midline. The incorrect answers provide details of muscles with different origins, insertions, and actions.

Explanation

The Xiphihumeralis muscle originates near the xiphoid process, inserts along the humerus, and works with the pectoralis minor in drawing the forelimb toward the midline. The incorrect answers provide details of muscles with different origins, insertions, and actions.

5. Where does the Latissimus Dorsi muscle originate from?

Origin: Medial epicondyle of the humerus

Origin: Iliac crest

Origin: Neural spines of the fourth or fifth thoracic to teh sixth lumbar vertebraeInsertion: Medial surface of humerus at the proximal endAction: Pulls forelimb dorsocaudally

Origin: Lateral surface of the scapula

The Latissimus Dorsi muscle originates from the neural spines of the fourth or fifth thoracic to the sixth lumbar vertebrae. This muscle plays a role in pulling the forelimb dorsocaudally.

Explanation

The Latissimus Dorsi muscle originates from the neural spines of the fourth or fifth thoracic to the sixth lumbar vertebrae. This muscle plays a role in pulling the forelimb dorsocaudally.

6. What is the origin, insertion, and action of the Clavotrapezius (#5) muscle?

Origin: Ilium, Insertion: Femur, Action: Extends the knee.

Origin: Spinous processes of thoracic vertebrae, Insertion: Upper arm bone, Action: Flexes the wrist.

Origin: Sternum, Insertion: Scapula, Action: Retracts the humerus.

Origin: Lambdoidal ridge, middorsal raphe over spine of the axisInsertion: Clavicle and raphe between clavotrapezius and clavobranchialisAction: Protracts the humerus

The correct answers provide specific details about the origin, insertion, and action of the Clavotrapezius muscle. The incorrect answers do not accurately describe the characteristics of this particular muscle, making them wrong choices for the multiple-choice question.

Explanation

The correct answers provide specific details about the origin, insertion, and action of the Clavotrapezius muscle. The incorrect answers do not accurately describe the characteristics of this particular muscle, making them wrong choices for the multiple-choice question.

7. What is the origin, insertion, and action of the muscle Clavobrachialis?

Incorrect Answer 1: Origin: Humerus and scapula; Insertion: Radius and ulna; Action: Extends the forearm.

Incorrect Answer 2: Origin: Sternum and ribs; Insertion: Metacarpals; Action: Abducts the arm.

Incorrect Answer 3: Origin: Femur and pelvis; Insertion: Tibia and fibula; Action: Flexes the thigh.

Origin: Clavicle and raphe between clavotrapezius and clavobrachialisInsertion: Medial surface of the ulna distalAction: Flexes the forearm

Clavobrachialis muscle originates from the clavicle and raphe between clavotrapezius and clavobrachialis, inserts on the medial surface of the ulna distal, and its main action is to flex the forearm. The incorrect answers provided describe muscles with different origins, insertions, and actions, highlighting the unique characteristics of Clavobrachialis.

Explanation

Clavobrachialis muscle originates from the clavicle and raphe between clavotrapezius and clavobrachialis, inserts on the medial surface of the ulna distal, and its main action is to flex the forearm. The incorrect answers provided describe muscles with different origins, insertions, and actions, highlighting the unique characteristics of Clavobrachialis.