Download Human Anatomy and Physiology Worksheet 8

Human Anatomy and Physiology Worksheet 8
1.
Name: ___________________________________
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
2.
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
3.
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
4.
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
5.
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:
a. flexing the hip joint (2):
b. extending the knee:
c. dorsiflexing the foot:
6.
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
7.
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?
8.
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:
9.
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?
10.
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.