anatomy chapter 10
An antagonist is
a muscle working in opposition to another muscle
Supination of the forearm and hand is accomplished by the __________
biceps brachii and supinator
Of the following muscles of the thigh, which one is NOT part of the quadriceps group?
biceps femoris
Which of the following is a posterior thigh muscle?
biceps femoris
Which of the following muscles attaches on the head of the fibula?
biceps femoris
The flexion of the elbow represents a __________ lever system.
class III
The zygomaticus major muscle
contributes to laughing and smiling.
The depressor anguli oris muscle
contributes to pouting.
Raising your arm to shoulder level is accomplished almost entirely by the _________
deltoid
Contracting the trapezius muscle would
extend and laterally flex the neck
Which abdominal wall muscle is the most superficial of the oblique muscles?
external abdominal oblique
Which of the following muscles is found in the lateral compartment of the leg?
fibularis longus
Which of the following correctly lists the arrangement of components found in a third-class lever?
fulcrum--pull--weight
he adductor longus is named for its __________.
function and size
Muscles can be classified based on their shape and fascicle orientation. Which shape has muscle fibers that run the length of the muscle and taper at each end?
fusiform
Which of the following is inserted on the calcaneus by the Achilles tendon?
gastrocnemius
Which of the following muscles is used when walking on your tiptoes?
gastrocnemius
Which of the following represents a class I lever system?
hyperextension of the head
Facial muscles are unusual in that they
insert and sometimes originate on skin and connective tissue
When a skeletal muscle contracts to cause a given movement, the more movable end of attachment of the muscle is called its __________.
insertion
Which of the following is true regarding the levator scapula muscle?
it laterally flexes the neck is the scapula is fixed
n the body's lever systems, the
joint represents fulcrum point
Eversion and plantar flexion is accomplished by muscles in the __________ compartment.
lateral
The infraspinatus __________.
laterally rotates the arm
The arm is attached to the thorax by the __________.
latissimus dorsi and pectoralis major
Which muscle will elevate the scapula?
levator scapulae
Which of the following muscles is involved in chewing gum?
masseter
The type of muscle that functions as a sphincter is __________
orbicular
Closing or puckering the lips is the action of the __________ muscle.
orbicularis oris
The sternocleidomastoid muscle extends from the mastoid process of the temporal bone to the sternum and medial clavicle. When both sternocleidomastoid muscles contract, the head is flexed. The end of the muscle that connects to the sternum is the __________.
origin
The brachioradialis is named for its __________.
origin and insertion
Which of the following muscles of the chest has its insertion on the humerus?
pectoralis major
The type of muscle that can contract with the greatest force is the __________.
pennate
Flexion of the hip is a movement produced by the __________.
psoas major and iliacus
Which of the following is a group of four muscles in the anterior thigh?
quadriceps femoris
Which of the following muscles is named for its location?
quadriceps femoris
The abdominal muscle that has its origin at the pubic crest and symphysis pubis is the _________
rectus abdominis
Contracting the right sternocleidomastoid muscle would
rotate the head toward the left
The muscle that is used to cross the legs is __________.
sartorius
Which muscle dorsiflexes and inverts the foot
tibialus anterior
Which abdominal wall muscle inserts on the xiphoid process and the linea alba?
transverse abdominis
Which of the following muscles is named for its shape?
trapezius
