Exercise 13

How many adductor muscles are there?

5

What is the insertion of the fibularis tertius muscle?

Dorsum of metatarsal 5

How does the action of the fibularis longus in humans differ from that of the fibulas tertius?

Fibularis longus plantars flexes and everts foot. Fibularis tertius dorsiflexes foot.

What muscle flexes the lumbar vertebrae as part of its action?

Iliopsoas

Where do the hamstring muscles originate as a group?

Ischial tuberosity

Which muscle group is located on the anterior part of the thigh?

Quadriceps

List four muscles that are responsible for thigh flexion.

Rectus femoris, Iliopsoas, tensor fasciae latae, and sartorius

How do gluteus medius and gluteus minimus prevent you from toppling over as you walk?

Stabilizes pelvis; keeps balance and maintains center of gravity

What is insertion of the tibialis anterior in humans?

metatarsal 1 cuneiform 1

How does the action of the rectus femoris differ from that of the other quadriceps muscles?

only quadriceps muscle that flexes the thigh

What is a muscle that is an antagonist to the biceps femoris muscle?

rectus femoris

If you were to ride a horse what muscles would you use to keep your seat out of the saddle as you rode? (8)

rectus femoris, vastus lateralis, vastus medialis, gracilis, pectineus, adductor brevis, adductor longus, adductor magnus

What are two muscles that are synergist with the biceps femoris muscle?

semitendinosis and semimembranous

Plantar flexion occurs by what muscles? (7)

soleus, fibularis longus, fibularis brevis, gastrocnemius, tibialis posterior, flexor digitorum longus, and flexor hallucis longus.

What is insertion of all the muscles of the quadriceps group?

tibial tuberosity

Is abduction of the thigh movement away from or toward the midline?

away from midline

What is the insertion of the soleus?

calcaneus by the calcaneal tendon

What is the origin of the gastrocnemius?

condyles on femur

What is the insertion of the flexor digitorum longus?

distal phalanges of digits 2-5

What is the action of the extensor hallucis longus?

extends hallux, dorsiflexes and inverts foot.

What is the action of the vastus lateralis?

extends leg

What muscle extends the toes?

extensor digitorum longus

Plantar flexion and eversion of the foot occur by the action of what muscle?

fibulas tertius

What calf is made up of what two major muscles?

gastrocnemius and soleus