Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Mass272 Ch 11 Part 3

Origin, Insertion, Action, Innervation of Muscles 11-3

MuscleOriginInsertionActionInnervation
Sternocleidomastiod Sternum and Clavicle Mastoid Process Acting together (bilaterally), flex cervical portion of vertebral column, flex head, and elevate sternum during forced inhalation; acting singly (unilaterally), lateraly extend and rotate head to side opposite contracting muscle. Accessory (XI) 11
Semispinalis Capitus Transverse process of first 6 or 7 thoracic vertebrae and 7th cervical vertibra, and articular processes of 4th, 5th, and 6th cervical vertebrae. Occipital bone between superior and inferior nuchal lines. Acting together, extend head; acting singly, rotate head to side opposite contracting muscle. Cervical spinal nerves
Splenius Capitus Ligamentum nuchae and spinous processes of 7th cervical vertebra and first 3 or 4 thoracic vertebrae. Occipital bone and mastoid process of temporal bone. Acting together, extend head; acting singly, laterally flex and rotate head to same side as contracting muscle. Cervical spinal nerves
Longissimus Capitus Transverse processes of upper four thoracic vertebrae and articular processes of last four cervical vertebrae. Mastoid process of temporal bone. Acting together, extend head; acting singly, laterally flex and rotate head to same side as contracting muscle. Cervical spinal nerves
Rectus Abdominis Pubic crest and pubic symphysis. Cartilage of 5th to 7th ribs and xiphoid process. Flexes vertebral column, especially lumbar portion, and compresses abdomen to aid in defecation, urination, forces exhalation, and childbirth. Thoracic spinal nerves T7-T12
External Oblique Inferior eight ribs. Iliac crest and linea alba. Acting together, compress abdomen and flex vertebral column; acting singly, laterally flex vertebral column, especially lumbar portion, and rotate vertebral column. Thoracic spinal nerves T7-T12 and the iliohypogastric nerve.
Internal Oblique Iliac crest, inguinal ligament, and thoracolumbar fascia. Cartilage of last three or four ribs and linea alba. Acting together, compress abdomen and flex vertebral column; acting singly, laterally flex vertebral column, especially lumbar portion, and rotate vertebral column. Thoracic spinal nerves T8-T12, iliohypogastric nerve, and ilioinguinal nerve.
Transverse Abdominis Iliac crest, inguinal ligament, lumbar facia, and cartilages of inferior six ribs. Xiphoid process, linea alba and pubis. Compresses abdomen. Thoracic spinal nerves T8-T12, iliohypogastric nerve, and ilioinguinal nerve.
Quadratus Lumborum Iliac crest and iliolumbar ligament. Inferior border of 12th rib and first four lumbar vertebrae. Acting together, pull 12th ribs inferiorly during forced exhalation, fix 12th ribs toprevent their elevation during deep inhalation, and help extend lumbar portion of vertebral column; acting singly, laterally flex vertebral column, esp lumbar portion. Thoracic spinal nerve T12 and lumbar spinal nerves L1-L3 or L4.
Diaphragm Xiphoid process of the sternum, costal cartilages and adjacent portions of the inferior six ribs, lumbar vertebrae and their intervertebral discs, and the 12th rib. Central tendon. Contraction causes it to flatten and increase the vertical dimension of the thoracic cavity, resulting in inhalation; relaxation causes it to move superiorly and decreases the vertical dimension of the thoracic cavity, resulting in exhalation. Phrenic nerve which contain axons form cervical spinal nerves C3-C5.
External Intercostals Inferior border of rib above. Superior border of rib below. Contraction elevates the ribs and increases the aneroposterior and lateral dimensions of the thoracic cavity, resulting in inhalation; relaxation depresses the ribs and decreases the anteroposterior and lateral dimensions of thorax, results in exhalation. Thoracic spinal nerves T2-T12.
Internal Intercostals Superior border of rib below. Inferior border of rib below. Contraction draws adjacent ribs together to further decrease the anteroposterior and lateral dimensions of the thoracic cavity during forced exhalation. Thoracic spinal nerves T2-T12
Subclavius 1st rib. Clavical. Depresses and moves clavical anteriorly and helps stabilize pectoral girdle. Subclavian nerve.
Pectoralis Minor 2nd - 5th, 3rd - 5th, or 2nd - 4th ribs. Coracoid process of scapula. Abducts scapula and rotates it downward; elevates 3rd through 5th ribs during forced inhalation when scapula is fixed. Medial pectoral nerve.
Serratus Anterior Superior eight or nine ribs. Vertebral border and inferior angle of scapula. Abducts scapula and rotates it upward; elevates ribs when scapula is stabilized; known as "Boxer's muscle" because it is important in horizontal arm movements such as punching and pushing. Long thoracic nerve.
Trapezius Superior muchal line of occiptal bone, ligamentum nuchae, and spines of 7th cervical and all thoracic vertebrae. Clavical and acromion and spine of scapula. Superior fibers elevate scapula and help extend head; middle fibers adduct scapula; inferior fibers depress scapula; superior and inferior fibers together rotate scapula forward; stabilizes scapula. Accessory (XI) 11 nerve and cervical spinal nerves C3-C5.
Levator Scapulae Superior four or five cervical vertebrae. Superior vertebral border of scapula. Elevates scapula and rotates it downward. Dorsal scapular nerve and cervical spinal nerves C3-C5.
Rhomboid Major Spines of the 2nd - 5th thoracic vertebrae. Vertebral border of scapula inferior to spine. Elevates and adducts scapula and rotates it downward; stabilizes scapula. Dorsal scapular nerve.
Rhomboid Minor Spines of the 7th cervical and 1st thoracic. Vertebral border of scapula superior to spine. Elevates and adducts scapula and rotates it downward; stabilizes scapula. Dorsal scapular nerve.
Pectoralis Major Clavicle (clavicular head), sternum, and costal cartilage of 2nd - 6th ribs and sometimes 1st - 7th ribs (sternocostal head) Greater tubercle and lateral lip of the intertubercular sulcus of humerus. Adducts and medially rotates arm at shoulder joint; clavicular head flexes arm, and sternocostal head extends the flexed arm to side of trunk. Medial and lateral pectoral nerves.
Latissimus Dorsi Spines of inferior six thoracic vertebrae, lumbar vertebrae, crests of sacrum and ilium, inferior four ribs. Intertubercular sulcus of humerus. Extends, adducts, and medially rotates arm at shoulder joint; draws arm inferiorly and posteriorly. Thoracodorsal nerve
Deltoid Acromial extremity of clavicle (anterior fibers), acromion of scapula (lateral fibers), and spine of scapula (posterior fibers). Deltoid tuberostiy of humerus. Lateral fibers abduct arm at shoulder joint; anterior fibers flex and medially rotate arm at shoulder joint; posterior fibers extend and laterally rotate arm at shoulder joint. Axillary nerve
Subscapularis Subscapular fossa of scapula. Lesser tubercle of humerus. Medially rotates arm at shoulder joint. Upper and lower subscapular nerve.
Supraspinatus Supraspinous fossa of scapula. Greater tubercle of humerus. Assists deltoid muscle in abducting arm at shoulder joint. Subscapular nerve
Infraspinatus Infraspinous fossa. Greater tubercle of humerus. Laterally rotates and adducts arm at shoulder joint. Subscapular nerve
Teres Major Inferior angle of scapula. Medial lip of intertubercular sulcus of humerus. Extends arm at shoulder joint and assists in adduction and medial rotation of arm at shoulder joint. Lower subscapular nerve
Teres Minor Inferior lateral border of scapula. Greater tubercle of humerus. Laterally rotates, extends, and adducts arm at shoulder joint. Axillary nerve
Coracobrachialis Coracoid process of scapula. Middle of medial surface of shaft of humerus. Flexes and adducts arm at shoulder joint. Musculocutaneous nerve
Biceps Brachii Long head originates from tubercle above glenoid cavity of scapula (supraglenoid tubercle); short head originates form coracoid process of scapula. Radial tuberosity of radius and bicipital aponeurosis. Flexes forearm at elbow joint, supinates forearm at radioulnar joints, and flexes arm at shoulder joint. Musculocutaneous nerve.
Brachialis Distal, anterior surface of humerus. Ulnar tuberostiy and coronoid process of ulna. Flexes forearm at elbow joint. Musculocutaneous and radial nerves.
Brachioradialis Lateral border of distal end of humerus. SUperior to styloid process of radius. Flexes forearm at elbow joint, supinates and pronates forearm at radioulnar joints to neutral position. Radial nerve.
Triceps Brachii Long head: infraglenoid tubercle, inferior to glenoid cavity of scapula; Lateral head: lateral and posterior surface of humerus; Medial head: entire posterior durface of humerus inferior to a groove for the radial nerve. Olecranon of ulna. Extends forearm at elbow joint and extends arm at shoulder joint. Radial nerve.
Anconeus Lateral epicondyle of humerus Olecranon and superior portion of shaft of ulna. Extends forearm at elbow joint. Radial nerve.
Pronator Teres Medial epicondle of humerus and coronoid process of ulna. Midlateral surface of radius. Pronates forearm at radioulnar forearm at elbow. Median nerve.
Pronator Quadratus Distal protion of shaft of ulna. Distal portion of shaft of radius. Pronates forearm at radioulnar joints. Median nerve.
Supinator Lateral epicondyle of humerus and ridge near radial notch of ulna (supinator crest). Lateral surface of proximal 1/3 of radius. Supinates forearm at radioulnar joints. Deep radial nerve.
Created by: jujuskyyflower
Popular Massage Therapy sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards