ZOOL 2403 Exam 2 Frequently Most
Asked Questions with Expert Graded
A+ Answers
1. Most muscles that cross a joint work around... - ANSWER ALL axes of
rotation associated with that joint but BEST around 1 of those axes
2. When the biceps contracts... - ANSWER the distance between the arm and
forearm is reduced
3. Muscle: biceps - ANSWER Joint: Elbow
Axis of rotation: horizontal
Movement: Flexion
4. Levator labii superioris - ANSWER Raises lips
5. Zygomaticus - ANSWER Smile
6. Buccinator - ANSWER Tightens cheeks
7. Depressor labii inferioris - ANSWER Pulls lips down
8. Muscles of Mastication - ANSWER Masseter
Temporalis
9. Masseter - ANSWER strongest jaw muscle
, Elevates mandible and closes jaw
10.Temporalis - ANSWER Elevates mandible
11.Pterygoid muscles - ANSWER elevates, depresses, or protracts the
mandible or slides it form side to side (lateral excursion)
12.Muscles of the Tongue - ANSWER All muscles end in -glossus
Move tongue
13.Muscles of the Pharynx and Larynx - ANSWER Muscles of the pharynx
responsible for initiating the swallowing process by constricting pharynx
Muscles of the larynx elevate the larynx
14.Anterior Muscles of the Neck - ANSWER Suprahyoid muscles
Infrahyoid muscles
15.Sternocleidomastoid - ANSWER Head and neck extensor/rotator
16.Posterior Muscles of the Neck - ANSWER Head and neck extensors
17.Muscles of the Vertebral Column - ANSWER Extends the trunk (keep the
trunk erect)
18.Muscles of the Anterior Body Wall (Chest) - ANSWER Intercostals (2)
Obliques (2)
Transversus Abdominis
Rectus Abdominis
,19.Generality: The muscles that cross the sternoclavicular joint... - ANSWER
move the shoulder
20.Generality: The muscles that cross the shoulder joint... - ANSWER move
the arm
21.Generality: The muscles that cross the elbow joint... - ANSWER move the
forearm
22.Generality: The muscles that cross the wrist joints... - ANSWER move the
hand
23.Generality: The muscles that cross the joints of digits... - ANSWER move
fingers
24.Division of the Muscular System - ANSWER Axial muscles
Appendicular muscles
25.Axial muscles - ANSWER Associated with head, vertebral column, and
thoracic cage
60% of skeletal muscles
26.Appendicular muscles - ANSWER Associated with pectoral and pelvic
girdles and limbs
40% of skeletal muscles
27.Muscle Groups of the Head and Neck - ANSWER Muscles of Facial
Expression
, Muscles of Mastication
Muscles of the Eye
Muscles of the Pharynx
Muscles of the Larynx
Muscles that Move the Head
28.Muscles of Facial Expression - ANSWER Frontalis
Orbicularis oculi
Orbicularis oris
Levator labii superioris
Zygomaticus
Buccinator
Depressor labii inferioris
29.Frontalis - ANSWER Raises eyebrow
30.Orbicularis oculi - ANSWER Closes eye
31.Orbicularis oris - ANSWER Puckers lips
32.Intercostals - ANSWER Maintain distance between ribs
33.Obliques - ANSWER Rotates trunk
34.Transverse Abdominis - ANSWER Flattens abdomen
35.Rectus Abdominis - ANSWER Flexes trunk
Asked Questions with Expert Graded
A+ Answers
1. Most muscles that cross a joint work around... - ANSWER ALL axes of
rotation associated with that joint but BEST around 1 of those axes
2. When the biceps contracts... - ANSWER the distance between the arm and
forearm is reduced
3. Muscle: biceps - ANSWER Joint: Elbow
Axis of rotation: horizontal
Movement: Flexion
4. Levator labii superioris - ANSWER Raises lips
5. Zygomaticus - ANSWER Smile
6. Buccinator - ANSWER Tightens cheeks
7. Depressor labii inferioris - ANSWER Pulls lips down
8. Muscles of Mastication - ANSWER Masseter
Temporalis
9. Masseter - ANSWER strongest jaw muscle
, Elevates mandible and closes jaw
10.Temporalis - ANSWER Elevates mandible
11.Pterygoid muscles - ANSWER elevates, depresses, or protracts the
mandible or slides it form side to side (lateral excursion)
12.Muscles of the Tongue - ANSWER All muscles end in -glossus
Move tongue
13.Muscles of the Pharynx and Larynx - ANSWER Muscles of the pharynx
responsible for initiating the swallowing process by constricting pharynx
Muscles of the larynx elevate the larynx
14.Anterior Muscles of the Neck - ANSWER Suprahyoid muscles
Infrahyoid muscles
15.Sternocleidomastoid - ANSWER Head and neck extensor/rotator
16.Posterior Muscles of the Neck - ANSWER Head and neck extensors
17.Muscles of the Vertebral Column - ANSWER Extends the trunk (keep the
trunk erect)
18.Muscles of the Anterior Body Wall (Chest) - ANSWER Intercostals (2)
Obliques (2)
Transversus Abdominis
Rectus Abdominis
,19.Generality: The muscles that cross the sternoclavicular joint... - ANSWER
move the shoulder
20.Generality: The muscles that cross the shoulder joint... - ANSWER move
the arm
21.Generality: The muscles that cross the elbow joint... - ANSWER move the
forearm
22.Generality: The muscles that cross the wrist joints... - ANSWER move the
hand
23.Generality: The muscles that cross the joints of digits... - ANSWER move
fingers
24.Division of the Muscular System - ANSWER Axial muscles
Appendicular muscles
25.Axial muscles - ANSWER Associated with head, vertebral column, and
thoracic cage
60% of skeletal muscles
26.Appendicular muscles - ANSWER Associated with pectoral and pelvic
girdles and limbs
40% of skeletal muscles
27.Muscle Groups of the Head and Neck - ANSWER Muscles of Facial
Expression
, Muscles of Mastication
Muscles of the Eye
Muscles of the Pharynx
Muscles of the Larynx
Muscles that Move the Head
28.Muscles of Facial Expression - ANSWER Frontalis
Orbicularis oculi
Orbicularis oris
Levator labii superioris
Zygomaticus
Buccinator
Depressor labii inferioris
29.Frontalis - ANSWER Raises eyebrow
30.Orbicularis oculi - ANSWER Closes eye
31.Orbicularis oris - ANSWER Puckers lips
32.Intercostals - ANSWER Maintain distance between ribs
33.Obliques - ANSWER Rotates trunk
34.Transverse Abdominis - ANSWER Flattens abdomen
35.Rectus Abdominis - ANSWER Flexes trunk
