pectoral minor. Bones, ligaments, joints, muscles with functions. The deltoid, the thick muscle that creates the rounded lines of the shoulder is the major abductor of the arm, but it also facilitates flexing and medial rotation, as well as extension and lateral rotation. Each trunk splits to form an anterior and a … The largest of which is the pectoralis major muscle which originates from the sternum (breast bone), ribs and collar bone and attaches to the upper arm bone (humerus). The forearm, made of the radius and ulna bones, has four main types of action at the hinge of the elbow joint: flexion, extension, pronation, and supination. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Pectoral Muscle. Start studying Muscles of the pectoral girdle. The muscles that make up the shoulders and upper limbs include the muscles that position the pelvic girdle, the muscles that move the humerus, the muscles that move the forearm, and the muscles that move the wrists, hands, and fingers. It is surrounded by muscles on both its anterior (deep) and posterior (superficial) sides, and thus does not articulate with the ribs of the thoracic cage. The anterior thoracic muscles are the subclavius, pectoralis minor, and the serratus anterior. Muscles That Position the Pectoral Girdle. Nine muscles cross the shoulder joint to move the humerus. The tendons of the deep subscapularis, supraspinatus, infraspinatus, and teres minor connect the scapula to the humerus, forming the rotator cuff (musculotendinous cuff), the circle of tendons around the shoulder joint. serratus anterior. Function. When the rhomboids are contracted, your scapula moves medially, which can pull the shoulder and upper limb posteriorly. Muscles that position the pectoral girdle are located either on the anterior thorax or on the posterior thorax ((Figure) and (Figure)). Click on the tags below to find other quizzes on the same subject. The pectoral girdle is made up of two major bones: the clavicle and scapula. The two axial muscles are the pectoralis major and the latissimus dorsi. There is an anatomical connection between pectoral girdle and the axial skeleton; that is, the sternoclavicular joints, that lies anteriorly. The humerus, radius, and ulna are typical of the mammalian family. The pectoral girdle has two equal halves which are known as 'ossa innominata'. The hypothenar muscles include the abductor digiti minimi, flexor digiti minimi brevis, and the opponens digiti minimi. The pectoral girdle is homologous to the shoulder girdle and is composed of several bones (Fig. Search Help in Finding Identify Muscles of the Pectoral Girdle/Shoulder - Online Quiz Version These are the flexor pollicis longus and the flexor digitorum profundus. Finally, the coracobrachialis flexes and adducts the arm. Gluteal Region Muscles That Move the Femur. Wrist, hand, and finger movements are facilitated by two groups of muscles. Muscles That Move the Wrist, Hands, and Forearm. Shoulder Girdle Muscle: The shoulder girdle is also known as the pectoral girdle. Muscles That Position the Pectoral Girdle. Muscles that position the pectoral girdle are located either on … The roots combine to form three trunks (superior, middle, and inferior). The long teres minor laterally rotates and extends the arm. These muscles and their associated blood vessels and nerves form the anterior compartment of the arm (anterior flexor compartment of the arm) (Figure 7.29 and Figure 7.30). The muscles in the superficial posterior compartment of the forearm (superficial posterior extensor compartment of the forearm) originate on the humerus. Which of the following anterior muscles of the pectoral girdle only influence the clavicle, more specifically, is the stabilizer of the clavicle? The anterior muscles include the subclavius , pectoralis minor, and serratus anterior. (a, c) The muscles that move the humerus anteriorly are generally located on the anterior side of the body and originate from the sternum (e.g., pectoralis major) or the anterior side of the scapula (e.g., subscapularis). Wrist, hand, and finger movements are facilitated by two groups of muscles. Clavicle bone. When the forearm faces posteriorly, it is pronated. The tendons of the forearm muscles attach to the wrist and extend into the hand. The anterior muscles include the subclavius, pectoralis minor, and serratus anterior. Tendons of the infraspinatus, supraspinatus, teres minor, and the subscapularis form the rotator cuff, which forms a foundation on which the arms and shoulders can be stabilized and move. The two pectoralis major muscles… The ones that originate on the axial skeleton are the pectoralis major and the latissimus dorsi. The anterior muscles include the subclavius, pectoralis minor, and serratus anterior. The muscles originating in the upper arm flex, extend, pronate, and supinate the forearm. When the rhomboids are contracted, your scapula moves medially, which can pull the shoulder and upper limb posteriorly. The thenar muscles are on the radial aspect of the palm. These muscles allow your fingers to also make precise movements for actions, such as typing or writing. The movements of the thumb play an integral role in most precise movements of the hand. subclavius. From lateral to medial, the superficial anterior compartment of the forearm includes the flexor carpi radialis, palmaris longus, flexor carpi ulnaris, and flexor digitorum superficialis. We assessed the contribution of neck and pectoral girdle muscles to the development of Pes during maximal static inspiratory efforts. The tendons of the deep subscapularis, supraspinatus, infraspinatus, and teres minor connect the scapula to the humerus, forming the rotator cuff (musculotendinous cuff), the circle of tendons around the shoulder joint. The thenar muscles, which are located on the lateral part of the palm, are the abductor pollicis brevis, opponens pollicis, flexor pollicis brevis, and adductor pollicis. About this Quiz. LGMD has an autosomal pattern of inheritance and currently has no known cure or … Note that the pectoralis major and deltoid, which move the humerus, are cut here to show the deeper positioning muscles. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The muscles that move the humerus inferiorly generally originate from middle or lower back (e.g., latissiumus dorsi). The purpose of a girdle is to make a person's waist and stomach look smaller and firmer. It is supported by the clavicle, which also articulates with … The thick and flat teres major is inferior to the teres minor and extends the arm, and assists in adduction and medial rotation of it. 11/8/2012 2 ORIGIN: INNERVATION: spinous processes of C 7 – T 5 INSERTION: ACTION medial border of scapula (Posterior view) Rhomboids (major / minor) Muscles Stabilizing Pectoral Girdle INNERVATION: dorsal scapular nerve: adducts / rotates scapula The muscles of the deep posterior compartment of the forearm (deep posterior extensor compartment of the forearm) originate on the radius and ulna. Fibrous bands called retinacula sheath the tendons at the wrist. The anterior muscles include the subclavius, pectoralis minor, and serratus anterior. About this Quiz. The flexor digitorum superficialis flexes the hand as well as the digits at the knuckles, which allows for rapid finger movements, as in typing or playing a musical instrument (see (Figure) and (Figure)). Similar to the muscles that position the pectoral girdle, muscles that cross the shoulder joint and move the humerus bone of the arm include both axial and scapular muscles (Figure 7.27 and Figure 7.28). The extensors are the triceps brachii and anconeus. This is an online quiz called Muscles of the Pectoral Girdle There is a printable worksheet available for download here so you can take the quiz with pen and paper. posteriorly, there is a physiological joint – (scapulothoracic joint) or muscular connection between the shoulder girdle and the axial skeleton, which is formed by muscles including the trapezius, rhomboids and serratus anterior. However, poor ergonomics can irritate the tendons of these muscles as they slide back and forth with the carpal tunnel of the anterior wrist and pinch the median nerve, which also travels through the tunnel, causing Carpal Tunnel Syndrome. Named for their locations, the supraspinatus (superior to the spine of the scapula) and the infraspinatus (inferior to the spine of the scapula) abduct the arm, and laterally rotate the arm, respectively. The anatomical and ligamental structure of the shoulder joint and the arrangements of the muscles covering it, allows the arm to carry out different types of movements. The hypothenar muscles include the abductor digiti minimi, flexor digiti minimi brevis, and the opponens digiti minimi. Click on the tags below to find other quizzes on the same subject. It provides support and stabilization to allow the shoulder to move. Quiz: What is Anatomy and Physiology? The clavicle and scapula make up the pectoral girdle, which provides a stable origin for the muscles that move the humerus. Previous Pectoral Girdle. The rhomboid major and rhomboid minor muscles are categorized as muscles that move the pectoral girdle. angkhan / … (d) The muscles that move the humerus posteriorly are generally located on the posterior side of the body and insert into the scapula (e.g., infraspinatus). The biceps brachii, brachialis, and brachioradialis flex the forearm. The forearm flexors include the biceps brachii, brachialis, and brachioradialis. This is no doubt another adaptation to life in an air environment, where the… An amazing network of nerves runs through the shoulder girdle need. These are the extensor radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, and the extensor carpi ulnaris. 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