Advertisement Upgrade to remove ads

What is the pectoral girdle designed to do?

Increase upper limb mobility

Name the two groups in the pectoral girdle.

Dorsal and Ventral

Name the components of the dorsal groups.

Trapezius, Rhomboids, and Levator scapulae

Where does the trapezius muscle originate?

Occipital bone and spinous processes of thoracic vertebrae

Where does the trapezius muscle insert?

Clavicle and scapula (acromian process and spine)

What is the trapezius muscle responsible for?

Elevation, Retraction, and Depression or rotation of scapula

What is the function of the rhomboids?

adducts and performs downward rotation of scapula (pulls towards center of back)

What is the levator scapulae responsible for?

Elevation of the scapula (shrugging)

Name the muscles categorized under the ventral group of the pectoral girdle.

Serratus anterior, Subclavius, and Pectoralis minor

What is the function of the serratus anterior?

protracts (abducts) scapula swinging the shoulder anteriorly and rotates the glenoid cavity moving it superiorly

What is the subclavius responsible for?

Depresses and protracts

What is the function of the pectoralis minor?

depresses and protracts shoulder and rotates scapula so glenoid cavity moves inferiorly

Where does the deltoid originate?

Clavicle and acromian process/spine of scapula

Where does the deltoid insert?

Deltoid tuberosity of humerus

What is the function of the deltoid?

Abduction of shoulder and flexion or extension and medial or lateral movement of humerus

What is the supraspinatus in relation to the deltoid and what does it initiate?

Synergist, Movement

Where does the supraspinatus originate?

Supraspinous fossa of scapula

Where does the supraspinatus insert?

Greater tubercle of humerus

Name the muscles of the upper arm.

Deltoid, Supraspinatus, Teres major, Subscapularis, Infraspinatus, Teres minor, Coracobrachialis, pectoralis major, and Latissimus dorsi

Where does the teres major originate?

Inferior angle of scapula

Where does the teres major insert?

Intertubercular groove of humerus

What is the function of the teres major?

Extension, adduction, and medial rotation of the shoulder

Where does the subscapularis originate?

Subscapular fossa

Where does the subscapularis insert?

Lesser tubercle of humerus

What is the function of the subscapularis?

Medial rotation of shoulder

Where does the infraspinatus originate?

Infraspinous fossa

WHere does the infraspinatus insert?

Greater tubercle of humerus

What is the function of the infraspinatus?

Lateral rotation of shoulder

Where does the teres minor originate?

Lateral border of scapula

Where does the teres minor insert?

Greater tubercle of humerus

What is the teres minor responsible for?

Lateral rotation of shoulder

Where does the corachobrachialis originate?

Coracoid process

Where does the corachobrachialis insert?

Medial margin of shaft of humerus

What is the function of the corachobrachialis?

Adduction and flexion at shoulder

Where does the pectoralis major originate?

Cartilage of ribs 2-6, body of sternum, and inferior medial portion of clavicle

Where does the pectoralis major insert?

Crest of greater tubercle and intertubercular groove of humerus

What is the function of the pectoralis major?

Flexion, adduction, and medial rotation at shoulder

Where does the latissimus dorsi originate?

Spinous process of inferior thoracic and all lumbar vertebrae and ribs 8-12

Where does the latissimus dorsi insert?

Intertubercular groove of humerus

What is the function of the latissimus dorsi?

Extension, adduction, and medial rotation at shoulder

Name the flexors of the forearm.

Biceps brachii, Brachialis, and Brachioradialis

Where does the short head of the biceps brachii originate?

Coracoid process of scapula

Where does the long head of the biceps brachii originate?

Supraglenoid tubercle of scapula

Where does the biceps brachii insert?

Radial tuberosity

What is the action of the biceps brachii?

Flexion at elbow and supination (palm forward)

Where does the brachialis originate?

Anterior distal surface of humerus

Where does the brachialis insert?

Ulnar tuberosity

what is the function of the brachialis and brachioradialis?

Flexion at elbow

Where does the brachioradialis originate?

Lateral epicondyle of humerus

Where does the brachioradialis insert?

Ulnar tuberosity

Name the extensors of the forearm.

Triceps brachii

Where does the lateral head of the triceps brachii originate?

Superior lateral margin of humerus

Where does the lateral head of the triceps brachii insert?

Olecranon of elbow

What is the function of the lateral head of the triceps brachii?

Extension of elbow

Where does the long head of the triceps brachii originate?

Infraglenoid tubercle of scapula

What is the function of the long head of the triceps brachii?

Extension of elbow and extension and adduction of shoulder

Where does the medial head of the triceps brachii originate?

posterior surface of humerus

Where does the medial head of the triceps brachii insert?

Olecranon

What is the function of the medial portion of the triceps brachii?

Extension of elbow

Name the flexors of the wrist and hand.

Flexor carpi radialis, and Flexor carpi ulnaris

Where does the flexor carpi radialis originate?

Medial epicondyle of humerus

Where does the flexor carpi radialis insert?

Bases of metacarpal bone

What is the function of the flexor carpi radialis?

Flexion and abduction at wrist

where does the flexor carpi ulnaris originate?

Medial epicondyle of humerus and olecranon of ulna

Where does the flexor carpi ulnaris insert?

Carpal bones and metacarpal bones

What is the function of the flexor carpi ulnaris?

Flexion and adduction at wrist

Name the extensors of the wrist and hand.

Extensor carpi radialis, and Extensor carpi ulnaris,

Where does the extensor carpi radialis originate?

Lateral aspect of epicondyle and superior region of humerus

Where does the extensor carpi radialis insert?

Base of metacarpal bones

What is the function of the extensor carpi radialis?

Extension and abduction of wrist

Where does the extensor carpi ulnaris originate?

Lateral epicondyle of humerus and adjacent to ulna

Where does the extensor carpi ulnaris insert?

Metacarpal bones

What is the function of the extensor carpi ulnaris?

Extension and adduction of wrist

What is the function of the muscles of the thigh?

Designed to transfer weight and this extra bulk limits range of motion

Name the muscles of the gluteal group.

maximus, illiotibial tract, medius, minimus, and tensor fasciae latae

Where does the maximus originate?

Iliac crest and lateral surface of ilium, sacrum, coccyx, and thoracolumbar fascia

where does the maximus insert?

Iliotibial tract and gluteal tuberosity of femur

what is the function of the maximus?

Extension and lateral rotation at hip, stabilize extended knee

What is the iliotibial tract?

A band of collagenous fibers that extend along the lateral surface of the thigh

Where does the iliotibial tract insert?

Tibia

Where does the medius originate?

Anterior iliac crest and lateral surface of ilium

Where does the medius insert?

greater trochanter of femur

What is the function of the medius?

Abduction and medial rotation

where does the minimus originate?

Lateral surface of ilium

Where does the minimus insert?

Greater trochanter of femur

What is the function of the minimus?

Abduction and medial rotation

Where does the tensor fasciae latae originate?

Iliac crest

What is the function of the tensor fasciae latae?

Flexion and medial rotation at hip, laterally supports the knee

Name the muscles of the adductor group of the thigh.

Adductor brevis, Adductor longus, Adductor magnus, Pectineus, and Gracilis

What is the function of the adductor brevis and adductor longus muscles?

Adduction, Flexion, and medial rotation at hip

Where do all of the adductor muscles of the thigh originate?

Ramus of pubis

Where do all of the adductor muscles of the thigh insert?

femur

What is the function of the adductor magnus?

Adduction at hip, flexion and medial rotation

What is the function of the pectineus?

Flexion, medial rotation, and adduction at hip

What is the function of the gracilis?

flexion at knee, adduction and medial rotation at hip

Name the extensor muscles of the lower leg.

Rectus femoris, Vastus intermedius, Vastus lateralis, and Vastus medius

Where does the rectus femoris originate?

Anterior inferior iliac spine and superior acetabulum rim

Where does the rectus femoris insert?

Tibial tuberosity via quadriceps tendon, patella, and patellar ligament

What is the function of the rectus femoris?

Extension at knee and flexion at hip

Where does the vastus intermedius, vastus lateralis, and vastus medius originate?

Femur

Where does the vastus intermedius, vastus lateralis, and vastus medius insert?

Tibial tuberosity

What is the function of the vastus intermedius, vastus lateralis, and vastus medius?

Extension at knee

Name the flexors of the knee.

Biceps femoris, Semimembranosus, Semitendinosus, Sartorius, and Popliteus

Where does the biceps femoris, Semimebranosus, and Semitendinosus originate?

Ischial tuberosity

Where does the biceps femoris, semimebranosus, and semitendinosus insert?

Tibia

What is the function of the biceps femoris?

Flexion at knee, extension and lateral rotation at hip

What is the function of the semimebranosus and semitendinosus?

Flexion at knee, extension and medial rotation at hip

Where does the sartorius originate?

Anterior superior iliac spine

Where does the sartorius insert?

Medial surface of tibia near tibial tuberosity

What is the function of the sartorius?

Flexion at knee and lateral rotation at hip

Where does the popliteus originate?

Lateral condyle of femur

Where does the popliteus insert?

Posterior surface of proximal tibial shaft

What is the function of the popliteus?

Medial rotation of tibia and flexion at knee

Name the muscles of the ankle and foot.

Gastrocnemius, Soleus, and Tibialis anterior

Where does the gastrocnemius originate?

Femoral condyles

Where does the gastrocnemius insert?

Calcaneous

What is the function of the gastrocnemius?

Plantar flexion at ankle

Where does the soleus originate?

Head and proximal shaft of fibula and adjacent posteromedial shaft of tibia

Where does the soleus insert?

Calcaneous

What is the function of the soleus?

Plantar flexion at ankle and postural muscle when standing

Where does the tibialis anterior originate?

Lateral condyle and proximal shaft of tibia

where does the tibialis anterior insert?

Base of metatarsal bones and tarsals

What is the function of the tibialis?

Oppose action of gastrocnemius and dorsiflexion at ankle

Name the quadriceps.

Rectus femoris, Vastus intermedius, Vastus lateralis, and Vastus medius

What are the quadriceps responsible for?

Extension

Name the hamstring group.

Biceps femoris, Semimembranosus, Semitendinosus, Sartorius, and Popliteus

What is the hamstring group responsible for?

Flexion at knee

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set