Exam 2 Part 7

Question 1

biceps brachii

Answer 1

flexes forearm
origins; 2 on scapula: short head on coracoid process; long head at edge of glenoid cavity
insertion: radial tuberosity of radius

Question 2

brachialis

Answer 2

deep to biceps brachii, works with it to flex forearm

Question 3

crachioradialis

Answer 3

lateral surface of forearm; flexor

Question 4

triceps brachii

Answer 4

extends forearm (antagonistic to biceps brachii)

origin: 3: one on scapula (lateral border) and two on humerus
insertion: olecranon process of ulna

Question 5

medial muscles of thigh

Answer 5

adduct the thigh
adductor longus
gracilis
adductor magnus and adductor brevis

Question 6

adductor longus

Answer 6

begins superficially then goes deep
adducts thigh
origin: pubic bone
insertion: linea aspera of femur

Question 7

gracilis

Answer 7

graceful, slender
adducts thigh, flexes leg
origin: pubis
insertion: medial surface of tibia

Question 8

adductor magnus and adductor breivs

Answer 8

adduct thigh at hip joint

Question 9

anterior muscles of thigh

Answer 9

quadriceps femoris

sartorius

Question 10

quadraceps femoris

Answer 10

composite muscle with 4 heads (quads) extensors
all extend the leg forward
all have origins on pelvic or upper femur
all insert on the patella by a common quadriceps tendon, which extends over the knee to become the patellar ligament (inserts on tibial tuberosity)
rectus femoris

Question 11

rectus femoris

Answer 11

largest quardceps, center of leg

Question 12

vastus lateralis

Answer 12

quadriceps muscle -outside

Question 13

vastus medialis

Answer 13

quadriceps muscle -medial

Question 14

vastus intermedius

Answer 14

deepest quadriceps muscle

Question 15

sartorius

Answer 15

tailor's muscle: longest in body; flexor
anterior muscle of thigh
enable sitting (cross-legged) flexes knee and hip joints, abducts thigh
origin: ilium
insertion: medial side of tibia

Question 16

posterior thigh muscles

Answer 16

these are the hamstring muscle; antagonistic to quads
they flex the lower leg and extend thigh backwards
biceps femoris
semitendinosus
semimembranosus

Question 17

biceps femoris

Answer 17

most lateral posterior muscle; 2 heads

origin: 2 on ischial tuberosity, 2nd on linea aspera of femur
insertion: head of fibula and lateral condyle of tibia

Question 18

semitendinosus

Answer 18

posterior thigh muscle

origin: ischial tuberosity
insertion: medial surface of tibia

Question 19

semimembranosus

Answer 19

posterior thigh muscle
deep tosemitendonosus
origin: ischial tuberosity
insertion:medial condyle of tibia

Question 20

Gluteal muscle

Answer 20

gluteus maximus
gluteus medius
gluteus minimus

Question 21

gluteus maximus

Answer 21

largest muscle in body; allows us to be upright
extends leg, lateral rotation
origin: sacrum, coccyx, and ilium
insertion: linea aspera of femur and fascia of thigh via iliotibial tract (tendon)

Question 22

iliotibial tract

Answer 22

tendon

Question 23

gluteus medius

Answer 23

deep to gluteus maximus
abducts thigh, medial rotation of thigh
origin: ilium
insertion: greater trochanter of femur

Question 24

gluteus minimus

Answer 24

deep to gluteus medius
abducts thigh, medial rotation of thigh
origin: ilium
insertion: greater trochanter of femur

Question 25

tensor fasciae latae

Answer 25

abducts thigh; fuses with gluteus maximus, connect to iliotibial tract

Question 26

tensor

Answer 26

to stretch

Question 27

fascae

Answer 27

band

Question 28

latae

Answer 28

wide

Question 29

lower leg muscles

Answer 29

tibialis anterior

gastrocnemius

Question 30

tibialis anterior

Answer 30

flxes foot upward (dorsiflexion) and inversion of foot
origin: upper part of tibia
insertion: via long tendon onto tarsal and first metatarsal
injury-shin splints

Question 31

gastrocnemius

Answer 31

calf muscle; spans both knee and ankle
plantar flexion (point toes) flexor at knee
origin: 2; one on medial condyle, 2nd on lateral condyle of femur
insertion: via calcaneal (Achilles) tendon onto calcaneus