ZOOL 2403 BOROS LECTURE EXAM #2 QUESTIONS
What must a muscle do to be able to cause movement? - answer -they must contract
When a muscle contracts, does it shorten or lengthen? - answer -shortens
When the biceps brachii shortens, the distance between the arm and forearm is... -
answer -reduced
A muscle that crosses the elbow joint, moves the... - answer -forearm
The biceps brachii attaches at the ______ joint - answer -elbow
The biceps brachii rotates on the______ axis - answer -horizontal
What movement occurs with the biceps brachii? - answer -flexion
True or false: most muscles that cross a joint work around all axes of rotation
associated with that joint. - answer -true
How are you able to figure out the movement that a muscle causes? - answer -based
on where they are located
The muscles that cross the sternoclavicular joint, move the ____? - answer -shoulder
The muscles that cross the shoulder joint, move the ____? - answer -arm
The muscles that cross the elbow joint, move the ___? - answer -forearm
Muscles that cross the wrist joint, move the ___? - answer -hand
The muscles that cross the joints of the digits, move the ___? - answer -fingers
True or false: most anterior muscles are flexors and medial rotators. - answer -true
True or false: most posterior muscles are extensors and lateral rotators. - answer -true
What do abduction and adduction depend on? - answer -depend on whether muscle is
superior or inferior to a joint
What encompasses the axial skeleton? - answer -head, vertebral column, and thoracic
cage
What encompasses the appendicular skeleton? - answer -pectoral and pelvic girdles
and limbs
, What muscle groups encompass the head and the neck? - answer -facial expressions,
mastication, eye, tongue, pharynx, larynx, and muscles that move the head
What does the frontalis do? (facial expressions) - answer -raises eyebrows
What does the orbiculares oris do? (facial expressions) - answer -pucker lips
What does the orbiculares oculi do? (facial expression) - answer -closes eye
What does the elevator labii superioris do? (facial expression) - answer -raises top lips
What does the zygomaticus do? (facial expression) - answer -smile
What does the buccinator do? (facial expression) - answer -makes a tight smile
What does the depressor labor inferioris do? (facial expression) - answer -lower lips/
frown
What does orbicularis mean? - answer -circle
What does oculi mean? - answer -eye
What does oris mean/ - answer -mouth
What does labii mean? - answer -lips
What does buccinator mean? - answer -cheek
What does the temporalis do? (mastication) - answer -elevates mandible
What does the masseter do? (mastication) - answer -elevates mandible
What do the muscles of the tongue do? - answer -move the tongue
What do extrinsic eye muscles do? - answer -move the eye
What do the intercostal muscles do? - answer -maintain the distance between the ribs
True or false: appendicular muscles are layered. - answer -true
True or false: most plates indicate if the muscles are superficial or deep. - answer -true
True or false: a muscle associated with an appendage is layered. - answer -true
What are anterior trunk muscles classified as? - answer -shoulder protractors
What must a muscle do to be able to cause movement? - answer -they must contract
When a muscle contracts, does it shorten or lengthen? - answer -shortens
When the biceps brachii shortens, the distance between the arm and forearm is... -
answer -reduced
A muscle that crosses the elbow joint, moves the... - answer -forearm
The biceps brachii attaches at the ______ joint - answer -elbow
The biceps brachii rotates on the______ axis - answer -horizontal
What movement occurs with the biceps brachii? - answer -flexion
True or false: most muscles that cross a joint work around all axes of rotation
associated with that joint. - answer -true
How are you able to figure out the movement that a muscle causes? - answer -based
on where they are located
The muscles that cross the sternoclavicular joint, move the ____? - answer -shoulder
The muscles that cross the shoulder joint, move the ____? - answer -arm
The muscles that cross the elbow joint, move the ___? - answer -forearm
Muscles that cross the wrist joint, move the ___? - answer -hand
The muscles that cross the joints of the digits, move the ___? - answer -fingers
True or false: most anterior muscles are flexors and medial rotators. - answer -true
True or false: most posterior muscles are extensors and lateral rotators. - answer -true
What do abduction and adduction depend on? - answer -depend on whether muscle is
superior or inferior to a joint
What encompasses the axial skeleton? - answer -head, vertebral column, and thoracic
cage
What encompasses the appendicular skeleton? - answer -pectoral and pelvic girdles
and limbs
, What muscle groups encompass the head and the neck? - answer -facial expressions,
mastication, eye, tongue, pharynx, larynx, and muscles that move the head
What does the frontalis do? (facial expressions) - answer -raises eyebrows
What does the orbiculares oris do? (facial expressions) - answer -pucker lips
What does the orbiculares oculi do? (facial expression) - answer -closes eye
What does the elevator labii superioris do? (facial expression) - answer -raises top lips
What does the zygomaticus do? (facial expression) - answer -smile
What does the buccinator do? (facial expression) - answer -makes a tight smile
What does the depressor labor inferioris do? (facial expression) - answer -lower lips/
frown
What does orbicularis mean? - answer -circle
What does oculi mean? - answer -eye
What does oris mean/ - answer -mouth
What does labii mean? - answer -lips
What does buccinator mean? - answer -cheek
What does the temporalis do? (mastication) - answer -elevates mandible
What does the masseter do? (mastication) - answer -elevates mandible
What do the muscles of the tongue do? - answer -move the tongue
What do extrinsic eye muscles do? - answer -move the eye
What do the intercostal muscles do? - answer -maintain the distance between the ribs
True or false: appendicular muscles are layered. - answer -true
True or false: most plates indicate if the muscles are superficial or deep. - answer -true
True or false: a muscle associated with an appendage is layered. - answer -true
What are anterior trunk muscles classified as? - answer -shoulder protractors
