Muscles Attachments

Question 1

What is the origin of the Deltoid muscle?

Answer 1

Anterolateral clavicle and the acromial process of the scapula

Question 2

Where does the Deltoid muscle insert into?

Answer 2

Deltoid tuberosity of the humerus

Question 3

What are the 4 different muscles that make up the rotator cuff?

Answer 3

Supraspinator, infraspinator, Teres Minor and subscapularis

Question 4

Where does the Teres Minor orginate and insert?

Answer 4

Posteriorlateral board of the scapularis and inserts onto the Greater tubercle

Question 5

Where does the subscarpularis originate and insert ?

Answer 5

Originates at the subscapula fossa and inserts onto the lesser tubercle

Question 6

Where do the supraspinatus and infraspinatus muscle originate and insert

Answer 6

infra and supraspinatus fossa and both insert onto the greater tubercle

Question 7

Where does the Biceps bracchii originate and insert?

Answer 7

Originates from the coracoid process and supraglenoid tubercle and inserts onto the biceptal radial tuberosity

Question 8

Where does the tricep brachii originate and insert?

Answer 8

Originates from the posterior surface of the scapula and the infraglenoid tubercle and inserts into the olecranon process of the ulna

Question 9

What are the 2 muscles invovled in pronation of the hand?

Answer 9

Pronator Teres and the Pronator quadratus

Question 10

What muscle is used for supination?

Answer 10

Supinator - Stretches from the lateral epicondyle to the lateral proximal shaft of the radius

Question 11

Where does the pronator teres stretch?

Answer 11

Medial epicondyle to the lateral midshaft of the radius

Question 12

Where does the pronator quadratus stretch?

Answer 12

Distal radius shaft to distal ulnar shaft

Question 13

Name a extrinsic hand muscle

Answer 13

Flexor digitorium superficialus

Question 14

Whta is the flexor digitorum supercilialus and where does it originate and insert?

Answer 14

It is an extrinsic hand muscle and originates from the medial epicondyle of the humerus and stretches to the intermediate phalanx of each finger

Question 15

What are the 3 main intrinsic hand muscle groups?

Answer 15

Thenar(thumb), Hypothenar(little finger), Midpalmer groups(in between thumb and pinky)

Question 16

Where does the gluteus maximus originate and insert?

Answer 16

Origin:
posterior to posterior gluteal line of illum
lateral sacrum

Insertions:
illiotibial tract gluteal tuberosity of the femur

Question 17

What are the 4 muscles that make up the quadracepts femoris?

Answer 17

• Vastus lateralis
• Vastus medialis
• Vastus intermedius
• Rectus Femoris

Question 18

Which muscle of the quadracepts femoris extend from the hip to the tibia?

Answer 18

Rectus femoris

Question 19

Where does the tibialis anterior originate and insert?

Answer 19

Origin:
Lateral condyle
Anterolatero surface of tibia

Insert:
Medial cuneiform
1st metatarsal

Question 20

Where does the gastrocnemius originate and insert?

Answer 20

Origin
Medial and lateral fermoral condyles

Insertions
Calcanuim tuberosity via Calcanium tendon

Question 21

What are the 4 main groups of muscles in the abdomain?

Answer 21

Rectus abdominis
External abdominal obliques
Internal abdominal oblique
Transverse abdominis

Question 22

Where does the rectus abdominis stretch and what movement does it facilitate?

Answer 22

Stretches from the sternum to the pubis

invovled in lumbar flexion

Question 23

What muscle is involved in lumbar flexion?

Answer 23

Rectus abdominis

Question 24

Where does the external abdominal obliques stretch and what movement are they involved in?

Answer 24

Ribs 5-12 to illiac crest and pubis

Involved in lateral flexion and rotation of the spine

Question 25

What is invovled in lateral rotation and rotation of the spine?

Answer 25

External abdominal obliques

Question 26

Where do the internal abdominal obliques stretch and what movement are they involved in?

Answer 26

Ribs 10-12
Costal cartilages 7-10
pubis to illiac crest

invovled in rotation of spine and lateral flexion

Question 27

What type of muscles stretches from Ribs 10-12, costal cartilages and pubis to illiac crest?

Answer 27

Internal abdominal obliques

Question 28

Where do the transverse abdominis stretch and what movement are they involved in?

Answer 28

Illiac crest and costal cartilages 7-12 to pubis

involved in compression of abdomen.

Question 29

What muscle is involved in compression of the abdomen?

Answer 29

Transverse abdominis

Question 30

How many muscles make up the erector spinae and where are they found(general sense)?

Answer 30

9 and in the back

Question 31

Where do the proximal attachments of the spine attach to?

Answer 31

spinous process of C1 - T2

Question 32

Where do the distal attachments of the back to?

Answer 32

T9 - T12
illiac crest
Sacrum

Question 33

What is the function of the erector spinae?

Answer 33

Extension and lateral flexion of the spine