Biology II Module 6 Study Guide

For the arm muscles, where are the origins and where are the insertions?

• Origin- ElbowInsertion- Shoulder

• Origin- Shoulder

  Insertion- Elbow

• Origin- WristInsertion- Shoulder

• Origin- NeckInsertion- Elbow

The largest part of the muscle, which actually contains the muscle cells is what?

• Tendons

• Cartilage

• Belly

• Nerves

Where is the biceps femoris located? What can you say about this muscle without even looking it up?

• This muscle is on the thigh. It has two heads.

• The biceps femoris is located in the shoulder and is responsible for flexing the arm.

• The biceps femoris is located in the abdomen and is responsible for stabilizing the spine.

• The biceps femoris is located in the calf and is responsible for plantar flexion of the foot.

When you kick a ball with your leg straight and your knee locked, your rectus femoris muscle on the anterior (front) of the thigh contracts. Its origin is on the pelvic girdle, and its insertion is on the tibia. This flexes the thigh at the hip. What kind of lever system is this?

• First class lever

• Second class lever

• Fourth class lever

• Third class lever

Muscles in the forearm that create movement in the hands is called__?

• Intrinsic hand muscles

• Flexor muscles

• Extrinsic hand muscles

• Biceps brachii

We discussed two muscles that flex the forearm. List them. List the antagonist we discussed as well.

• The two flexors are triceps brachii and brachioradialis. The antagonist is the biceps brachii

• The two flexors are biceps brachii and brachioradialis. The antagonist is the triceps brachii

• The two flexors are deltoid and trapezius. The antagonist is the triceps brachii

• The two flexors are pectoralis major and latissimus dorsi. The antagonist is the biceps brachii

The point at which a muscle's tendon attaches to the more stationary bone.

• Origin

• Insertion

• Contraction

• Flexion

There is a muscle in arm called the supinator. What does this muscle do?

• This muscle flexes a structure.

• This muscle supinates a structure.

• This muscle extends a structure.

• This muscle adducts a structure.

List all of the muscles that are involved in flexing the thigh. List their antagonists.

• Muscles that flex the thigh are triceps brachii, deltoid, trapezius, and latissimus dorsi. The antagonists are rectus femoris, sartorius, iliopsoas, and adductor longus.

• Muscles that flex the thigh are gastrocnemius, soleus, tibialis anterior, and peroneus longus. The antagonists are rectus femoris, sartorius, iliopsoas, and adductor longus.

• Muscles that flex the thigh are rectus femoris, sartorius, iliopsoas, and adductor longus. The antagonists are gluteus maximus, semitendinosus, semimembranosus, biceps femoris, and adductor magnus

• Muscles that flex the thigh are pectoralis major, pectoralis minor, serratus anterior, and coracobrachialis. The antagonists are gluteus maximus, semitendinosus, semimembranosus, biceps femoris, and adductor magnus.

There is a muscle in the forearm called the flexor digitorum superficialis. What does this muscle do? Where is it located in relation to the other such muscles?

• This muscle extends digits or fingers. It is deeper than other such muscles.

• This muscle adducts digits or fingers. It is located between the other such muscles.

• This muscle abducts digits or fingers. It is located on the outside of other such muscles.

• This muscle flexes digits or fingers. It is closer to the surface than other such muscles