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Practice Quiz!!

Write down all your answers and then we will come back and see how well you

did!!

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What muscle is this?

• The WINKER• A ringlike band of muscle,

called a sphincter muscle, that surrounds the eye. It lies in the subcutaneous tissue of the eyelid

• Closes eye in blinking• It also aids in the

compressing the tear glands

Orbicularis Oculi?

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• The Frowner• Thin sheet like

superficial neck muscle.

• Plays a role in facial expression.

• Tenses skin of neck. (e.g. during shaving)

What muscle is this?

Platysma

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• Lies over the frontal bone

• Wrinkles forehead

What muscle is this?

Frontalis

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• “The Chewer”• A thick flattened

muscle that can be felt just in front of the ear when the teeth are clenched

• Elevates mandible • Closes mouth

What muscle is this?

Masseter

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What muscle is this?

o A large triangular muscle in the upper back that extends horizontally from the base of the skull and the cervical thoracic vertebrae to the shoulder

o Rotates scapula.

Trapezius

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• A broad curved muscle located on the side of the chest

• Arises from narrow strips on the upper ribs and extends along the medial wall of the axilla to the ventral surface of the scapula

• Pulls scapula anteriorly and downward

• Used to thrust the shoulder forward when pushing something.

What muscle is this?

Serratus Anterior

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What muscle is this?

• A thin, flat muscle that lies beneath the larger pectoralis major

• Stabilizes scapula by drawing it inferiorly and anteriorly against thoracic wall

                                                                 

Pectoralis Minor

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• Occupies the depression below the spine of the scapula on its posterior surface.

• Attach the scapula to the humerus; helps to hold humeral head in glenoid cavity of scapula.

• Laterally rotate arm

What muscle is this?

Infraspinatus

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• It is a wide, triangular muscle that curves upward from the lower back, around the sides, and to the armpit.

• Extends, adducts, and rotates arm, pulls shoulder down or back

What muscle is this?

Latissimus Dorsi

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• Abducts, extends, and flexes the arm

• It is a thick, triangular muscle that covers the shoulder joint.                                 

What muscle is this?

Deltoid

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What muscle is this?

• Connects the humerus to the radius.

• Flexes forearm at elbow

                              

                     Brachioradialis

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• Runs medially along the back of the forearm.

• Connects the humerus to the posterior surface of the phalanges and then extends the fingers.

• Extends hand at wrist joint

What muscle is this?

Extensor Digitorium

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What muscle is this?

• Long, straplike muscle that connects the pubic bones to the ribs and sternum.

• Tenses abdominal wall• Compresses contents• Flexes vertebral column

Rectus Abdominis

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What muscle is this?(2nd muscle of the hamstring)

• Long bandlike muscle on the back of the thigh.

• Connecting the ischium to the proximal end of the tibia.

• Flexes and rotates the leg medially and extends the thigh

Semitendinosus

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• An elongated, straplike muscle that passes obliquely across the front of the thigh and then descends over the medial side of the knee.

• Connects the ilium to the tibia and flexes the leg and the thigh.

• Flexes leg and thigh• Abducts and rotates thigh

laterally

What muscle is this?

Saritoris

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• Extends leg at knee• Most medial of your

quad muscles.

What muscle is this?

Rectus Femoris

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What muscle is this?

• The largest muscle in the body and covers a large part of each buttock

• Connects the ilium, sacrum, and coccyx to the femur by fascia of the thigh and extends the thigh.

• Extends thigh at hip, helps to straighten the lower limb, also used to raise the body from a sitting position

Gluteus Maximus

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What muscle is this?

• A long straplike muscle that passes from the pubic bone to the tibia.

• Adducts thigh • Flexes leg at knee

                

Gracilis

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What muscle is this?

• This is situated along the lateral side of the leg just behind the tibialis anterior.

• Dorsiflexion and eversion of the foot

• Extension of toes

Extensor Digitorium Longus

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What muscle is this?

• A thick, flat muscle located beneath the gastrocnemius and together these two muscles form the calf of the leg

• Arises from the tibia and fibula and extends to the heel

• Plantar flexion of foot

Soleus