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.
What is the Spinotrapezius?
Spinotrapezius, also called thoracic trapezius, is the most posterior of the three trapezius muscles. … Its origin is the neural spines of the thoracic vertebrae and its insertion is the scapular fascia. Its action is to draw the scapula to the dorsal and caudal regions.
Do humans have Spinotrapezius?
clavotrapezius, acromiotrapezius, spinotrapezius – three muscles in cat, one muscle in human (trapezius).
Where is Spinotrapezius located?
Anatomical note – The spinotrapezius muscle lies dorsally and extends from T4 to L3 along either side of the spine. The anterior border extends laterally to approximately the shoulder blade.
What is the action of the latissimus dorsi in the cat?
The latissimus dorsi has several different functions, all of which involve movements of the arm. The primary function is the adduction of the arm, another fu… The entrance into is this area is termed the fauces and contains a palatine tonsil embedded on each lateral mucosal wall.
Do humans have a Pectoantebrachialis?
Pectoantebrachialis &, xiphihumeralis are chest muscles in the cat. These muscles are missing in the human. Clavodeltoid, acromiodeltoid, &, spinodeltoid in the cat. There is one deltoid in the human.
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What is the insertion of the Spinodeltoid?
Muscles of the Neck, Shoulder, Chest and Abdomen
| Muscle Name | Origin | Insertion |
|---|---|---|
| Spinodeltoid | Spine of Scapula | Humerus |
| Spinotrapezius | Spines of thoracic vertebra | Scapula |
| Sternomastoid | Sternum | Mastoid process |
| Supraspinatus (Deep) | Scapula | Humerus |
What is the origin of the Acromiotrapezius?
Acromiotrapezius is the middle trapezius muscle. It covers the dorsal and lateral surfaces of the scapula. Its origin is the neural spines of the cervical vertebrae and its insertion is in the metacromion process and fascia of the clavotrapezius.
Where is the rhomboid major?
The rhomboid major is quadrangular muscle located inferior to the rhomboid minor. The origin of the rhomboid muscles is from the spinous processes of the T2-T5 vertebra and inserts on the medial border of the scapula, just inferior to the rhomboid minor.
What is bicep brachii?
The biceps brachii is a prominent muscle on the front side of the upper arm. It originates in two places: the coracoid process, a protrusion of the scapula (shoulder blade), and the upper glenoid cavity, the hollow for the shoulder joint.
What is the function of the humerus in a cat?
The humerus is an important bone for transfer of weight and for propelling the body forward, by its position, it also provides a protective function for the thorax. The humeral head articulates proximally with the scapula, and the humeral condyle articulates distally with the radius and ulna.
What movement does the Sartorius perform?
The function of the sartorius is unique in that it can serve as both a hip and knee flexor. The origin for the sartorius is the anterior superior iliac spine, sharing this origin with the tensor fascia lata. At the hip, it acts to both flex the hip as well as externally rotate.
What is thoracolumbar fascia?
The thoracolumbar fascia (TLF) is a girdling structure consisting of several aponeurotic and fascial layers that separates the paraspinal muscles from the muscles of the posterior abdominal wall.
Why is the latissimus dorsi muscle important?
The latissimus dorsi muscle is a large, triangularly shaped back muscle that helps you do things like pull-ups, swimming and even breathing. It functions to stabilize your back while extending your shoulders.
Why is it called latissimus dorsi?
The word latissimus dorsi (plural: latissimi dorsi) comes from Latin and means “broadest [muscle] of the back”, from “latissimus” (Latin: broadest)’ and “dorsum” (Latin: back). The pair of muscles are commonly known as “lats”, especially among bodybuilders. The latissimus dorsi is the largest muscle in the upper body.
Do cats have latissimus dorsi?
It is proposed that the latissimus dorsi, the cervical portion of the trapezius, the caudal portion of the omotransversarius, the deep pectoral, the deltoid, the biceps brachii, the lateral digital extensor and the extensor carpi ulnaris muscles are suitable for making muscular and musculocutaneous flaps in cat.
What does the Spinodeltoid do?
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.
How many Sternebrae does a cat have?
In the cat, the manubrium is slightly keeled, the sternebral body consists of 6 articulated sternebrae, and the last sternebra is the xiphisternum with a distal xiphoid process (4).
Do all cats have floating ribs?
It is found in various mammals including dogs, birds, reptiles and even cats. It can sometimes be seen when the dog is asleep with its eyes half open.
Where is the Spinodeltoid?
Spinodeltoid. A stout and short muscle lying posterior to the acromiodeltoid. It lies along the lower border of the scapula, and it passes through the upper arm, across the upper end of muscles of the upper arm.
What is the function of Infraspinatus?
The infraspinatus muscle’s action on the shoulder is primarily through its function as a rotator cuff muscle providing glenohumeral stability. The rotator cuff applies compression upon the head of the humerus that allows for the stabilization of the humeral head during shoulder abduction.
What is the origin insertion and action of the supraspinatus?
Supraspinatus muscle
| Origin | Supraspinous fossa of scapula |
|---|---|
| Insertion | Greater tubercle of humerus |
| Action | Shoulder joint: abduction of arm, stabilization of the humeral head in the glenoid cavity |
| Innervation | Suprascapular nerve (C5, C6) |
| Blood supply | Suprascapular artery |
What is the levator scapulae?
The levator scapulae muscles are superficial extrinsic muscles of the back that primarily function to elevate the scapulae. … The levator scapulae can have involvement in numerous pathologies, including snapping scapula syndrome, levator scapulae syndrome, Sprengel deformity, cervical myofascial pain, and fibromyalgia.
Where does Brachioradialis attach?
Brachioradialis muscle
| Origin | Lateral supracondylar ridge of humerus, lateral intermuscular septum of arm |
|---|---|
| Insertion | (Proximal to) styloid process of radius |
| Action | Elbow joint: Forearm flexion (when semi pronated) |
| Innervation | Radial nerve (C5-C6) |
| Blood supply | Radial artery, radial recurrent arteries, radial collateral artery |
Is Sternocleidomastoid a muscle?
The sternocleidomastoid muscle is one of the largest and most superficial cervical muscles. The primary actions of the muscle are rotation of the head to the opposite side and flexion of the neck. The sternocleidomastoid is innervated by the accessory nerve.
Why do rhomboids hurt?
Pain in your rhomboid muscle or your upper back and shoulders can be caused by many things, including an injury, a strain, or overuse. Rhomboid muscle pain can happen from: Bad posture, especially sitting hunched at your computer for too long. Rowing motions.
What do your rhomboids do?
The rhomboids are rhombus-shaped and are used to pull the shoulder blades together. They also rotate the scapula in a downward direction and provide stability for your shoulders.
How do rhomboids work?
The rhomboids work when you pull your shoulder blades back and together (scapular retraction). What you want to do is really squeeze the rhomboids when in the retracted position. So, at the end of a row, you squeeze the rhomboids (focus on the muscles in-between your shoulder blades and spine, aka the rhomboids).
How does the biceps brachii affect the movement of the shoulder?
The biceps brachii is a bi-articular muscle affecting motion at the shoulder and elbow. … The results indicated that both shoulder and elbow joint angles influence the shoulder joint elevation moment produced by the biceps brachii.
What happens when the biceps brachii contracts?
When your biceps brachii contracts, it tugs on the radius and pulls it to the outside. This turns your palm to face forward. Forearm flexion: bending the elbow with the palm facing forward. Let one arm hang with your palm facing forward.
How does the biceps Supinate?
Biceps Brachii Muscle – Origins &, Actions – Human Anatomy | Kenhub
What is the function of the structure of the cat?
The bones of the limbs, spine, chest and pelvis provide a sophisticated system of levers manipulated by the cat’s powerful muscles, while other bony structures protect the vital organs, for instance, the arched ribcage and pelvis protect the heart, lungs and reproductive systems, and the rigid skull protects the …
What is human humerus?
humerus, long bone of the upper limb or forelimb of land vertebrates that forms the shoulder joint above, where it articulates with a lateral depression of the shoulder blade (glenoid cavity of scapula), and the elbow joint below, where it articulates with projections of the ulna and the radius.
Where is the humerus on a cat?
The humerus connects the shoulder and the elbow. It is a S-shaped bone with a twist.
Why is sartorius called honeymoon muscle?
Sartorius, the Honeymoon Muscle: It is called so because it causes abduction and lateral rotation at hip joint which would be a critical action for all the action that is required during the Honeymoon.
Why is the sartorius muscle important?
Function. The sartorius muscle can move the hip joint and the knee joint, but all of its actions are weak, making it a synergist muscle. At the hip, it can flex, weakly abduct, and laterally rotate the femur. At the knee, it can flex the leg, when the knee is flexed, sartorius medially rotates the leg.
What does sartorius pain feel like?
This inflammation may be experienced as pain or hypersensitivity on the inside of the knee[1]. Other symptoms of sartorius-related muscle pain can include a burning or stinging sensation at the front of the hip. This pain may be brought on by an overt trauma, such as an athletic injury.
What is thoracolumbar Levoscoliosis?
Thoracolumbar levoscoliosis
This type of levoscoliosis affects the thorax and lumbar spine. It usually occurs as an S-shape curvature of the spine. In this case, the spine usually curves to the right side. However, it is hard to treat this condition because it affects the upper and lower sections of the spine.
Where is lumbosacral?
Of or relating to or near the small of the back and the back part of the pelvis between the hips. The lumbosacral junction consist of the L5 vertebral body articulating with the first sacral vertebral body. In the seated position the lumbosacral discs are loaded three times more than standing.
Is thoracolumbar fascia a tendon?
The thoracolumbar fascia (lumbodorsal fascia or thoracodorsal fascia) is a deep investing membrane throughout most of the posterior thorax and abdomen although it is a thin fibrous lamina in the thoracic region.
…
| Thoracolumbar fascia | |
|---|---|
| FMA | 25072 |
| Anatomical terminology |
What is the function of the pectoralis major?
The pectoralis major extends across the upper part of the chest and is attached to a ridge at the rear of the humerus (the bone of the upper arm). Its major actions are adduction, or depression, of the arm (in opposition to the action of the deltoideus muscle) and rotation of the arm forward about the axis of the body.
What muscles work lats?
What Are the Lats? The lats refer to the latissimus dorsi muscles, which are a pair of large, triangular, or V-shaped muscles on either side of your spine. They span from the very inside of your upper arm by your shoulder down to the back of the pelvis at the waist, creating a dramatic taper spanning your entire back.
Can you tear your latissimus dorsi?
In rare cases, your latissimus dorsi can tear. This usually only happens to professional athletes, such as water skiers, golfers, baseball pitchers, rock climbers, track athletes, volleyball players, and gymnasts. But a serious injury can cause it as well.
Do cats have belly buttons?
Because cats are mammals like us, kittens are born attached to their mother via the umbilical cord, resulting in a belly button. However, mother cats do not have scissors. … Instead, it is a simple scar that becomes covered by the cat’s fur. This explains why cats appear to have no belly button at all.
Do cats have lips?
Cats don’t have big slobbery lips like a lot of dogs do, but they have lips nonetheless. … Some cats can have black or otherwise darkish spots on their lips.
Why do cats have carpal pads?
The sixth pad on a cat’s front paws is called the carpal pad. Its main purpose is to provide a cat with extra traction when they are going down a hill, coming to a stop and jumping off of a high spot. Besides providing extra traction the pad also acts as a shock absorber much like the other five.