Muscles of the arm and leg actions

Jason injured his hamstring muscle group during football practice. He will be unable to perform ________.

• thigh extension and knee flexion

• dorsiflexion

• thigh abduction and adduction

• leg rotation and plantar flexion

Which of these muscles is the prime mover of elbow extension?

• brachialis

• latissumus dorsi

• deltoid

• triceps brachii

• biceps brachii

Action of the quadriceps muscles?

• extends leg at knee and flex thigh

• extends thigh at hip and extend knee

• flexes leg at knee and extend thigh

Dorsiflexion of foot (flexion of tarsals)

• soleus

• fibularis longus

• tibialis anterior

• gastrocnemius

Tags

NGSS.MS-PS2-1

plantar flexion of foot (extends tarsals)

• soleus

• fibularis longus

• tibialis anterior

• gastrocnemius

plantar flexion of foot (extends tarsals)

• soleus

• semitendinosus

• tibialis anterior

• vastus medialis

abducts thigh

• gluteus maximus

• soleus

• gluteus medius

• rectus abdominus

Rotates thigh

• rectus femoris

• sartorius

• semitendinosis

• brachioradialis

The biceps ___________ arm at the elbow

• extends

• abducts

• flexes

• adducts

The gluteus maximus helps with

• Knee extension

• Knee flexion

• Thigh flexion

• Thigh extension