Chapter 10 Part 6 (multiple choice) Flashcards Preview

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Flashcards in Chapter 10 Part 6 (multiple choice) Deck (22):
1

Which type of lever is demonstrated by using scissors?
A) a second-class lever
B) a first-class lever
C) a third-class lever
D) a fourth-class lever

B) a first-class lever

2

What muscle is primarily responsible for preventing foot drop?
A) extensor hallucis longus
B) fibularis tertius
C) extensor digitorum longus
D) tibialis anterior

C) extensor digitorum longus

3

What is the major factor controlling how levers work?
A) the weight of the load
B) the direction the load is being moved
C) the difference in the positioning of the effort, load, and fulcrum
D) the structural characteristics of the muscles of the person using the lever

C) the difference in the positioning of the effort, load, and fulcrum

4

Which of the following is not a muscle primarily involved in the breathing process?
A) external intercostal
B) internal intercostal
C) latissimus dorsi
D) diaphragm

C) latissimus dorsi

5

What is the main factor that determines the power of a muscle?
A) the total number of muscle cells available for contraction
B) the number of neurons innervating it
C) the shape
D) the length

A) the total number of muscle cells available for contraction

6

What is a muscle that provides the major force for producing a specific movement called?
A) a synergist
B) a fixator
C) an agonist
D) an antagonist

C) an agonist

7

When the term biceps, triceps, or quadriceps forms part of a muscle'ʹs name, what does it tell you about the muscle?
A) The muscle has two, three, or four functions, respectively.
B) The muscle has two, three, or four insertions, respectively.
C) The muscle is able to change direction twice, three times, or four times faster than other muscles, respectively.
D) The muscle has two, three, or four origins, respectively.

D) The muscle has two, three, or four origins, respectively.

8

The most powerful muscle in the body is the ________.
A) quadriceps femoris
B) gluteus maximus
C) rectus abdominis
D) gastrocnemius

A) quadriceps femoris

9

The names of muscles often indicate the action of the muscle. What does the term levator mean?
A) The muscle elevates
B) The muscle flexes and rotates a region.
C) The muscle is a fixator and stabilizes a bone or joint.
D) The muscle functions as a synergist.

A) The muscle elevates

10

Which of the following describes the suprahyoid muscles?
A) They are a group of muscles that lie superior to the hyoid bone
and help form the floor of the oral cavity.
B) They move the pharynx superiorly during swallowing.
C) They depress the larynx and hyoid bone if the mandible is fixed.
D) They are often called strap muscles.

A) They are a group of muscles that lie superior to the hyoid bone

11

The supraspinatus is named for its location on the posterior aspect of the scapula above the spine. What is its action?
A) to extend and medially rotate the humerus and to act as a synergist of the latissimus dorsi
B) to help hold the head of the humerus in the glenoid cavity and rotate the humerus laterally
C) to stabilize the shoulder joint and help prevent downward location of the humerus and to assist in abduction
D) to flex and adduct the humerus and to act as a synergist of the pectoralis major

C) to stabilize the shoulder joint and help prevent downward location of the humerus and to assist in abduction

12

Which of the following muscles is not a rotator cuff muscle?
A) teres minor
B) levator scapulae
C) supraspinatus
D) subscapularis

B) levator scapulae

13

Which of the following muscles is involved in producing horizontal wrinkles in the forehead?
A) the zygomaticus major
B) the frontal belly of the epicranius
C) the temporalis
D) the medial pterygoid

B) the frontal belly of the epicranius

14

A cute, little curly-haired child is sitting behind you in church. You turn around for a moment and she sticks her tongue out at you. Which tongue muscle did she use?
A) hyoglossus
B) orbicularis oris
C) genioglossus
D) stylohyoid

C) genioglossus

15

Which group of muscles flexes and rotates the neck?
A) the splenius
B) the spinalis
C) the scalenes
D) the iliocostalis

C) the scalenes

16

Which of the following muscles is involved in crossing one leg over the other while in a sitting position?
A) the quadriceps femoris
B) the gastrocnemius
C) the sartorius
D) all of the hamstrings

C) the sartorius

17

Which of the following muscles inserts by the calcaneal tendon?
A) the gastrocnemius
B) the semitendinosus
C) the sartorius
D) the tibialis anterior

A) the gastrocnemius

18

If a lever operates at a mechanical disadvantage, it means that the ________.
A) effort is farther than the load from the fulcrum
B) load is far from the fulcrum and the effort is applied near the fulcrum
C) lever system is useless
D) load is near the fulcrum and the effort is at the distal end

B) load is far from the fulcrum and the effort is applied near the fulcrum

19

Which of the following muscles fixes and depresses the ribs and stabilizes the pelvis during walking?
A) rectus abdominis
B) internal oblique
C) transversus abdominis
D) external oblique

A) rectus abdominis

20

A muscle that opposes, or reverses, a particular movement is a(n) ________.
A) agonist
B) fixator
C) synergist
D) antagonist

D) antagonist

21

What type of muscle assists an agonist by causing a like movement or by stabilizing a joint over which an agonist acts?
A) a synergist
B) an antagonist
C) an agonist
D) a prime mover

A) a synergist

22

Which of the following is not a member of the hamstrings?
A) semitendinosus
B) gracilis
C) semimembranosus
D) biceps femoris

B) gracilis