Lab 9 AOI's

Question 1

External intercostals

Answer 1

A: elevation of ribs during inhalation
O: inferior border of rib above
I: superior border of the rib below

Question 2

Internal intercostals

Answer 2

A: depression of ribs during inspiration
O: superior border of rib below
I: inferior border of rib above

Question 3

Diaphragm

Answer 3

A: contraction flattens during inspiration
O: ribs 5-10 and their costal cartilages; arcuate ligaments and L1-L3 vertebral bodies
I: central tendon

Question 4

Rectus abdominis

Answer 4

A: flexion of trunk; compression of anterior abdominal wall
O: Pubic crest and symphysis pubis
I: xiphoid process and costal cartilages of ribs 1-3

Question 5

Subscapularis

Answer 5

A: medial rotation of arm; holds head of humerus in glenoid cavity
O: subscapular fossa of scapula
I: lesser tubercle of humerus

Question 6

Suprasinatus

Answer 6

A: abduction of arm; holds head of humerus in glenoid cavity
O: supraspinous fossa of scapula
I: greater tubercle of humerus

Question 7

Infraspinatus

Answer 7

A: lateral rotation of arm; holds head of humerus in glenoid cavity
O: infraspinous fossa of scapula
I: greater tubercle of humerus

Question 8

Teres major

Answer 8

A: medial rotation, adduction of arm; holds head of humerus in glenoid cavity
O: scapula (inferior angle and lateral border)
I: humerus (intertubercular sulcus)

Question 9

Long head of biceps brachii

Answer 9

A: supination and flexion of forearm; flexion of arm
O: supraglenoid tubercle of scapula
I: radial tuberosity

Question 10

Short head of biceps brachii

Answer 10

A: flexes elbow joint and supinates forearm
O: Coracoid process of scapula
I: radial tuberosity

Question 11

Brachialis

Answer 11

A: flexion of forearm
O: humerus (anterior distal shaft)
I: Ulnar tuberosity and coronoid process of ulna

Question 12

Iliacus

Answer 12

A: flexion of thigh
O: Iliac fossa; ala of sacrum
I: lesser trochanter of femur

Question 13

Psoas major

Answer 13

A: flexion and lateral rotation of thigh; lateral flexion of trunk
O: body of T12; L1-L5 vertebrae (bodies, transverse processes and intervertebral discs)
I: lesser trochanter of femur

Question 14

Sartorius

Answer 14

A: flexion, lateral rotation, and abduction of thigh; flexion of leg
O: anterior superior iliac spine
I: tibia (proximal medial shaft)

Question 15

Adductor mangus

Answer 15

A: adduction and extension of thigh
O: pubis (inferior ramus); ischium (ramus and tuberosity)
I: femur (gluteal tuberosity, linea aspera, and adductor tubercle)

Question 16

Adductor longus

Answer 16

A: adduction of thigh
O: pubis (body and inferior ramus)
I: femur (linea aspera)

Question 17

Pectineus

Answer 17

A: adducts, flexes and medially rotates thigh
O: pubis (body and superior ramus)
I: femur (proximal posterior shaft)

Question 18

Gracilis

Answer 18

A: adduction of thigh; flexion of leg
O: pubis (body and inferior ramus)
I: tibia (proximal medial shaft)

Question 19

Rectus femoris

Answer 19

A: extension of leg; flexion of thigh
O: anterior inferior iliac spine
I: patella; tibial tuberosity

Question 20

Vastus lateralis

Answer 20

A: extension of the leg
O: femur (greater trochanter and linea aspera)
I: patella; tibial tuberosity

Question 21

Vastus medialis

Answer 21

A: extension of the leg
O: femur (intertrochanteric line and linea aspera)
I: patella, tibial tuberosity

Question 22

Vastus intermedius

Answer 22

A: extension of leg
O: femur (anterolateral shaft)
I: patella; tibial tuberosity

Question 23

Piriformis

Answer 23

A: lateral rotation of thigh
O: anterior sacrum
I: greater trochanter of femur

Question 24

Gluteus maximus

Answer 24

A: extension, lateral rotation, and abduction of thigh
O: Ilium (ala); sacrum; coccyx
I: gluteal tuberosity of femur; iliotibial tract

Question 25

Gluteus medius

Answer 25

A: abduction of thigh
O: Ilium (ala)
I: femur (greater trochanter)

Question 26

Gluteus minimus

Answer 26

A: abduction of thigh
O: Ilium (ala)
I: femur (greater trochanter)

Question 27

Long head of biceps femoris

Answer 27

A: flexion of leg; extension of thigh
O: Ischial tuberosity
I: head of fibula

Question 28

Short head of biceps femoris

Answer 28

A: flexion of leg
O: femur (linea aspera)
I: head of fibula

Question 29

Semitendinosus

Answer 29

A: flexion of leg; extension of thigh
O: Ischial tuberosity
I: tibia (proximal medial shaft)

Question 30

Semimembranosus

Answer 30

A: flexion of leg; extension of thigh
O: Ischial tuberosity
I: medial condyle of tibia

Question 31

Tibialis anterior

Answer 31

A: dorsiflexes and inverts foot
O: tibia (lateral condyle); anterior lateral shaft of tibia; interosseous membrane
I: metatarsal I; medial cuneiform

Question 32

Extensor digitorum longus

Answer 32

A: extension of toes 2-5; dorsiflexion and inversion
O: tibia (lateral condyle); fibula (anterior shaft); interosseous membrane
I: distal phalanges of toes 2-5

Question 33

(Peroneus) fibularis longus

Answer 33

A: plantar flexes and everts the foot
O: fibula (proximal shaft)
I: metatarsal I; medial cuneiform

Question 34

Gastrocnemius

Answer 34

A: plantar flexion of foot; flexion of leg
O: medial and lateral condyles of femur
I: calcaneus

Question 35

Soleus

Answer 35

A: plantar flexion of foot
O: proximal posterior shafts of tibia and fibula
I: calcaneus

Question 36

Plantaris

Answer 36

A: plantar flexion of foot; flexion of leg
O: femur, (posterior distal shaft)
I: calcaneus