ANAT 7 MUSCLES

Question 1

Biceps brachii

Answer 1

-Long head – supraglenoid tubercle of scapula
-Short head – apex of coracoid process
-Tuberosity of radius
-Musculocutaneous nerve
-Flexion and supination of forearm

Question 2

Pectoralis major

Answer 2

-Clavicle, sternum, first seven costal cartilages, sixth rib
-Intertubercular sulcus of humerus
-Medial and lateral pectoral nerves
-Flexion, adduction and medial rotation of arm

Question 3

Rectus femoris

Answer 3

-Anterior inferior iliac spine, ilium above the acetabulum
-Quadriceps femoris tendon
-Femoral nerve
-Flexes the thigh at hip joint
Flexes the leg at knee joint

Question 4

Rectus abdominus

Answer 4

-Pubic crest, pubic tubercle and pubic symphysis
-Xiphoid process of sternum, costal cartilages of ribs 10-12
-Thoracoabdominal nerves
-Compress abdominal contents
Flexes vertebral column
Tenses abdominal wall

Question 5

External oblique

Answer 5

-Ribs 5 - 12
-Iliac crest
-Thoracoabdominal nerves
-Compress abdominal contents
Flexes trunk
Turns anterior aspect of abdomen to opposite side

Question 6

Adductor magnus

Answer 6

-Ischiopubic ramus and ischial tuberosity
-Femur, linea aspera, adductor tubercle, supracondylar line
-Obturator nerve
-Adducts and medially rotates thigh at hip joint

Question 7

Gastrocnemius and Plantaris

Answer 7

-Medial and lateral femoral condyles
-Via calcaneal tendon, posterior surface of calcaneus
-Tibial nerve
-Plantarflexes foot
Flexes knee

Question 8

Name arrangements of fascicle

Answer 8

Parallel
Fusiform e.g biceps brachii
Pennate- uni, bi, multi
Circular

Question 9

Nomenclature

Answer 9

Shape- orbicularis oculi
Attachment- SCM
Orientation- external oblique
Function- adductor magnus
Position- palmar