Term
| Appendicular musulature acounts for about how % in your body? |
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Definition
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Term
| What does the appendicular musculature stabilize? What does it do? |
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Definition
- Pectoral
-Pelvic girdles
Moves the upper and lower limbs |
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Term
| What are the two major groups of the appendicular musculature? |
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Definition
- Muscles of the pectoral girdle and upper limbs.
-Muscles of the pelvic girdle and lower limbs. |
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Term
| Appendicular skeleton is know as what? |
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Definition
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Term
| Movement of the joint is know as what? |
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Definition
| Is Based on joints struture. |
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Term
| Know the movement of a joint will help by what? |
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Definition
Predict the action of a particular muscle at the joint.
Example: Elbow is a hinge joint so no muscles will cause rotation. |
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Term
| What are the Orientations of a muscle relative to the joint. Give three explains? |
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Definition
1) Flexion and extension
2) Abduction and Adduction
3)Rotation |
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Term
| What is Flexion and extension? |
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Definition
-Flexor lies anterior across the joint
-Extensor lies posterior across the joint |
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Term
| What is Abduction and Adduction? |
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Definition
- Abductors crossses the lateral portion of a joint.
- Adductors crosses the medial portion of a joint. |
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Term
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Definition
There are two types of rotations.
1) Medial rotation: Lies across the medial portion of a joint.
2) Lateral rotation: Lies across the lateral portion of a joint. |
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Term
What is Insertion?
What does it mean? |
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Definition
Insertion points is the muscle relative to the joint.
Insertion is farther from the joint = stability and movement.
Insertion piont is closed to the joint = Movement. |
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Term
| What is the overview or features of the pectoral girdle and upper limb? |
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Definition
- Muscles that position the pectoral girdle.
- Muscle that move the arm.
- Muscles thatmove the forearm and hand.
- Muscles thatmove the hand and fingers. |
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Term
What is Lecator scapulae?
Origin?
Insertion?
Action? |
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Definition
- Deep muscle found below the trapezius.
Origin- Transverse processes of the first 4 cervical vertebrae.
Insertion- Vertebral border of the scapula near the superior angle.
Action- Elevates the scapula (shrugging shoulders) |
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Term
What is Serratus anterior?
Origin?
Insertion?
Action? |
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Definition
-Boxer's muscle
- Antagonist to the trapezius
Origin- anterior and superior margins of ribs 1-9
Insertion- Anterior surface of the vertebral border of the scapula.
Action- Protracts the shoulder, rotates the scapula so the glenoid cavity moves superiorly. |
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Term
What is Subclavius:
Origin?
Insertion?
Action? |
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Definition
Origin- First rib.
Insertion-Clavicle.
Action-Depresses and protracts the shoulder. |
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Term
What is Pectoralis Minor?
Origin?
Insertion?
Action? |
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Definition
- Deep to the pectorallis major (muscle that moves the arm)
Origin- Anterior surface of ribs 3-5.
Insertion- Coracoid process of the scapula.
Action- Depresses and protracts the shoulder. |
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Term
What is Trapezius:
Origin?
Insertion?
Action?
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Definition
Origin- Occipital bone and spinous processes of teh thoracic verebrae
Insertion- Clavicle and scapula (acromion and scapular spine)
Action- Depends on the active regions. |
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Term
What are the actions of the Trapezius?
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Definition
- Elevate the scapula = superior region
- Retract the scapula = Intermediate region
- Depress the scapula = inferior region
-Rotate the scapula upward = superior region
- Elevare the clavicle |
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Term
What is the Deltoid:
Origin?
Insertion?
Action? |
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Definition
Origin- Clavicle and scapula ( avromion and adjacent scapular spine)
Insertion- Deltoid tuberosity of the humerus
Action:
Whole muscle- Abduction if the arm
Anterior part- Flexion and medial rotation of the humerus
Posterior part- Extension and lateral rotation of the humerus. |
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Term
What is Supraspinatus?
Origin?
Insertion?
Action? |
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Definition
- Assists in the start of abduction by the deltiod.
Origin- Supraspinnous fossa of the scapula
Insertion- Greater tubercle of the humerus.
Action- Abduction of the arm |
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Term
What is the Teres major:
Origin?
Insertion?
Action?
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Definition
Origin- Inferior angle of the scapula.
Insertion- Medial lip of the intertubercular groove of the humerus
Action- Extension and medial rotation of the arm. |
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Term
What is the teres minor:
Origin?
Insertion?
Action? |
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Definition
Origin- Lateral border of the scapula.
Insertion- Greater tubercle of the humerus.
Action- Lateral rotation and adduction of the arm. |
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Term
What is Subscapularis:
Origin?
Insertion?
Action? |
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Definition
Origin- Subscapular fossa of the scapula.
Insertion- Lessser tubercle of the humerus.
Action- Medial rotation of the arm. |
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Term
What is the Infraspinatus:
Origin?
Insertion?
Action? |
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Definition
Origin- Infraspinous fossa of the scapula.
Insertion- Greater tubercle of the humerus
Action- Lateral rotation of the humerus. |
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Term
What is the Latissimus dorsi:
Origin?
Insertion?
Action? |
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Definition
Origin- Spinous process of the inferior thoracic and all lumbar vertebrae.
Insertion- Floor of the intertubcular groove of the humerus.
Action- Extension, adduction, and medial rotation. |
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Term
What is Pectoralis major:
Origin?
Insertion?
Action? |
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Definition
Origin- Cartilages of ribs 2-6,body of the sternum and inferior, medial portion of teh clavicle.
Insertion- Crest of the greater tubericle of the humerus and lateral lip of the intertubercular groove
Action- Flexion,adduction and medial rotation. |
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Term
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Definition
- Tendons of the supraspinatus, infraspinatus, subscapularis and teres minor muscle merge with the connective tissue of the shoulder joint to form the rotator cuff.
- Support and strengthen the joint capsule throughout a wide range of motions.
- Powerful repetitive arm movements can place intolerable strain on this muscles.
- May lead to tendon damage,muscle strains,bursists, and other painful injuries. |
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Term
What is the Biceps brachii: Short and Long heads.
Origin?
Insertion?
Action? |
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Definition
Origin-
Short- coracoid process
Long- supraglenoid tubercle
Insertion- Radial Tuberosity
Action- Flexes and supinate the forearm, flexes the shoulder. |
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Term
What is the Brachialis:
Origin?
Insertion?
Action? |
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Definition
Origin- Anterior,distal suface of the humerus.
Insertion- Tuberosity of the ulna.
Action- Flexes the forearm at the elbow. |
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Term
What is Brachioradialis:
Origin?
Insertion?
Action? |
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Definition
Origin- Lateral epicondyle of the humerus.
Insertion- Styoid process of the radius.
Action- Flexes the forearm at the elbow. |
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Term
What is Triceps Brachii (long, lateral, and medial heads):
Origin?
Insertion?
Action? |
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Definition
Origin-
Lateral- Superior lateral margin of the humerus
Long- Infraglenoid tubercle of the scapula
Medaial- Posterior surface of teh humerus
Insertion- Olecranon process of the ulna
Action- Extends the forearm, long head extension and adduction at the shoulder. |
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Term
What is the Pronators and Supinators?
Origin?
Insertion?
Action? |
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Definition
- Pronator teres muscle and the supinator muscle.
- Pronator quadratus muscle
- Originates on the ulna and assists the pronator teres muscle.
Origin- Humerus and Unla
Insertion- Radus
Action- Rotation of the forearm |
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Term
What is Flexor carpi ulnaris?
Origin?
Insertion?
Action?
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Definition
Origin- Medial epicondyle of the humerus, medial surface of the olecranon.
Insertion- Pisiform, hamate, and base of the 5th metacarpal bone.
Action- Flexes and adducts the hand |
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Term
What is Extensor carpi ulnaris:
Origin?
Insertion?
Action? |
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Definition
Origin- Lateral epicondyle of the humerus, adjacent dorsal suface of the ulna.
Insertion- Base of the 5th metacarpal.
Action- Extends and adducts teh hand at the wrist. |
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Term
What is Flexor carpi radialis:
Origin?
Insertion?
Action?
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Definition
Origin- Medial epicondyle of the humerus
Insertion- Bases of the 2nd and 3rd metacarpals
Action- Flexion and abduction of the wrist. |
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Term
What is Extensor carpi radialis longus/brevis?
Origin?
Insertion?
Action? |
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Definition
Origin-
Longus- Lateral supracondylar ridge of the humerus.
Brecis- lateral epicondyle if teh humerus.
Insertion-
Longus- Base of the 2nd metacarpal.
Brecis- Base of the 3rd metacarpal.
Action- Extension and abduction at the wrist. |
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Term
What is the muscles that move the forearm and hand?
Summary? |
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Definition
- Anterior compartment muscles (flexors)
- Posterior compartment mucles (extensors) |
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Term
| What is Anterior compartment muscles (flexors)? |
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Definition
- Originate on the humerus
- Typically insert on the carpals, metacarpals, phalanges. |
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Term
| What is Posterior compartment muscles (extensors)? |
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Definition
- Originate on the humerus.
- Insert on the metacarpals and phalanges. |
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Term
| What is Extrinsic muscles? |
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Definition
| - Provides strength and crude control of the hand and fingers. |
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Term
| What goes arocess the muscles extend across the wrist joint? |
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Definition
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Term
| What keeps the ensures maximum mobility of the wrist and hand? |
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Definition
| Relatively large muscles and keeping them clear of the joints ensures maximum modility. |
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Term
| What are some of the mucsle that ensure maximum mobility? |
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Definition
- Extensor retinaculum
- Flexor fetinaculum |
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Term
| What is Extensor retinaculum? |
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Definition
| - Wide band of connective tissue that holds the tendons of the extensor muscles in place. |
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Term
| What is the Flexor retinaculum? |
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Definition
| - Holds the tendons of the flexors muscles in place. |
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Term
What is Extensor digitorum?
Origin?
Insertion?
Action? |
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Definition
- Occupies most of the posterior surface of the forearm and divides into 4 tendons taht insert onn the medial and distal phalanges.
Origin- Lateral epocondyle of the humerus.
Insertion- Posterior surfaces of the phalanges.
Action- Extends the fingers and wrist. |
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Term
What is Flexor digitorum superficialis?
Origin?
Insertion?
Action?
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Definition
- Largest muscle of the forearm.
Origin- Medial epicondyle of the humerus.
Insertion- Bases of the middle phalanges of digits 2-5.
Action- Flexes the fingers, especially the middle phlanax and also flexes the wrist. |
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Term
What is the Flexor pollicis longus?
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Definition
- Flexion at the joints of the thumb.
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Term
| What is Extensor pollicis longus/brevis? |
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Definition
| - Extension at joints of the thumb, abduction at the wrist. |
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Term
What is the intrinsic muscles of the hand?
Originate?
Functions? |
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Definition
- Provides fine control of hand movements?
Originate- on the carpal and metacarpal bones.
Functions
- Flecion and extension and extension of the fingers at the meracarpophalangeal joints
- Abduction and addiction of the fingers at the metacarpophalangeal joints.
- Opposition and reposition of the thumb. |
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