Human Anatomy and Physiology Worksheet 8Name: ______

  1. Identify the following muscles of the head and neck by the following descriptions:

______used in smiling

______used to suck in your cheeks

______used in blinking and squinting

______used to pull the scalp posteriorly

______raises your eyebrows for a questioning expression

______your “kisser”

______prime mover to raise the lower jawbone

______fan-shaped muscle; closes the jaw

  1. Identify the major muscles of the trunk by the following descriptions:

______major spine flexor; the name means “straight muscle of the abdomen”

______prime mover for shoulder flexion and adduction

______prime mover for shoulder abduction

______forms the external lateral walls of the abdomen

______acting alone, each muscle of this pair turns the head toward the opposite

shoulder

______four muscle pairs that together form the so-called abdominal girdle

______

______

______

______a tendinous “seam”running from the sternum to the pubic symphysis that

indicates the midline point of fusion of the abdominal muscle sheaths

______deepest muscle of the abdominal wall

______deep muscles of the thorax that promote the inspiratory phase of breathing

______unpaired muscle that acts in concert with the muscles named immediately

above to accomplish inspiration

______muscle that enables you to shrug your shoulders or extend your head

______muscle that pulls the shoulder backward/downward and causes extension

of the arm

______shoulder muscle that is the antagonist of muscle just described

______acting individually, small rectangular muscles that rotate the glenoid cavity

of the scapulae inferiorly

______rotator cuff muscle that rotates the humerus laterally

  1. Identify the major muscles of the upper limbs by the following descriptions:

______wrist flexor that follows the ulna

______muscle that extends the fingers

______elbow flexor that also supinates

______prime mover that extends the elbow/forearm

______stocky muscle, deep to the biceps brachii, prime mover of elbow flexion

______wrist extensors that follow the radius (2)

______

______powerful shoulder abductor; used to raise the arm overhead

  1. Identify the major muscles of the lower limbs by the following descriptions:

______strong hip flexor, deep in pelvis; a composite of 2 muscles

______powerful hip extensor; forms most of buttock mass

______inverts and dorsiflexes the foot

______muscle group that enables you to draw your legs to the midline of your

body, as when standing at attention

______muscle group that extends the knee

______muscle group that extends the thigh and flexes the knee

______smaller hip muscle commonly used as an injection site

______thin superficial muscle of the medial thigh

______muscle enclosed within fascia that blends into the iliotibial tract; a

synergist of the iliopsoas

______dorsiflexes the foot; prime mover of toe extension

______superficial muscle of the lateral leg; plantar flexes and everts the foot

  1. When kicking a football, at least three major actions of the lower limb are involved. Name the major muscles or muscle groups responsible for the following:
  1. flexing the hip joint (2):
  1. extending the knee:
  1. dorsiflexing the foot:
  1. An accident victim (who was not wearing a seatbelt) was thrown from a vehicle and pronounced dead at the scene. The autopsy reveals the cause of death to be a spinal cord injury resulting in paralysis of the phrenic and intercostals nerves. What muscles were affected and why was this injury fatal?

Phrenic nerve

Intercostals nerve

  1. An elderly man is brought to the clinic by his distraught wife. Among other signs, the nurse notices that the muscles on the right side of his face are slack. What nerve is not functioning properly?
  1. Out of control during a temper tantrum, Malcolm smashed his fist through a glass door and severed several tendons at the anterior wrist. What movements are likely to be lost if tendon repair is not possible?

Wrist:Finger:

  1. Susan, a massage therapist, was giving Mr. Graves a back rub. What two broad superficial muscles of the back were receiving the “bulk” of her attention?
  1. Chao-Jung forcefully extended her knee while running for an alley shot on the tennis court and pulled some muscles in her posterior thigh. Precisely what 3 muscles (a-c) were likely strained, and what is the medical name for her condition (d)?

a.

b.

c.

d.