The spinodeltoid arises from the scapula spine and inserts on the proximal portion of the humerus. The acromiodeltoid and spinodeltoid work synergistically to flex the humerus and rotate it outward .
What is the function of the latissimus dorsi?
Latissimus dorsi works collaboratively with the teres major and pectoralis major to perform actions of the upper extremity. Together, these muscles will work to adduct, medially rotate and extend the arm at the glenohumeral joint .
What is the action of Pectoantebrachialis?
These muscles originate on the sternum and insert on or near the humerus. The major action of these muscles is adduction of the forelimb (i.e. the front leg is drawn toward the midline). ... The pectoantebrachialis is the most superficial muscle of the pectoral group.
What makes up the deltoid group in cats?
The deltoid muscles lie just lateral to the trapezius muscles, originating from several fibers spanning the clavicle and scapula, converging to insert at the humerus. Anatomically, there are only two deltoids in the cat, the acromiodeltoid and the spinodeltoid .
What is the teres major?
Teres major is a small muscle that runs along the lateral border of the scapula . It forms the inferior border of both the triangular space and quadrangular space.
What does a lat tear feel like?
When your latissimus dorsi is injured, you might feel pain in your low back , mid-to-upper back, along the base of your scapula, or in the back of the shoulder. You may even feel pain along the inside of the arm, all the way down to your fingers.
How do you strengthen your latissimus dorsi?
- From a kneeling position, sink your hips back and place your right forearm along the floor.
- Lean your weight onto your right arm and stretch out your left arm, reaching out through your fingertips. ...
- Hold this position for a few seconds.
- Return to the starting position.
- Repeat 10 times.
What is the action of Epitrochlearis?
In general, the muscles, which are located posteriorly on the torso and arms, act to abduct, elevate, extend, or protract the arm and its parts , while the muscles, which are located on the anteriorly on the torso and arms, act to adduct, depress, flex, and retract the arm and its parts.
What is the action of the Xiphihumeralis?
| Term Pectoantebrachialis Definition Origin: Manubrium of sternum Insertion: Fascia of forearm Action: adducts forearm | Term Xiphihumeralis Definition Origin: Xiphoid process of sternum Insertion: Humerus Action: Moves humerus caudal and medial |
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What is the function of the Spinotrapezius?
The spinotrapezius arises from the spinous processes of thoracic vertebrae and inserts on the fascia covering the scapular muscles. Its action is to adduct the scapula and pull it posteriorly.
How many heads exist on the deltoid muscle of the human?
It comprises 3 distinct portions each of which produces a different movement of the glenohumeral joint, commonly named the anterior, mid (or lateral) and posterior heads.
What are the three muscles that correspond to the single trapezius in humans?
- The trapezius group (these three muscles correspond to the single trapezius muscle in humans; compare the names of the cat trapezius muscles with the insertions of the human trapezius)
- Levator scapulae ventralis (same as the levator scapulae in humans; the human levator scapulae is located deep to the trapezius)
How does the function of the triceps muscle compare in cats and in humans?
What is the functions of both of these muscles? Triceps Brachii- acts to extend the forearm . ... If you look at a cat, the cat’s Triceps Brachii is more developed than the humans, while the Bicep Brachii is more developed in the human than the cat.
What is another name for teres major?
The teres major is also called the shoulder tender, mock tender or petite tender but I like teres major since it sounds cooler. This cut comes from the shoulder or chuck of the steer.
