Lecture Questions 11/6

Question 1

Muscle that opposes and reverses the action of another muscle

Answer 1

Antagonist

Question 2

Muscle that stabilizes the origin of an other muscle

Answer 2

Fixator

Question 3

Muscle that is primarily responsible for bringing about a particular movement

Answer 3

Agonist (prime mover)

Question 4

Movement that aids another by promoting the same movement

Answer 4

Synergist

Question 5

What lever class is humerus-ulna joint?

Answer 5

Third Lever Class

Question 6

What lever class is tibia-calcaneus joint?

Answer 6

Second Level Class

Question 7

What lever class is Atlanto-occipital joint?

Answer 7

First Level Class

Question 8

Which type of lever is exemplified by the flexing of the forearm by the biceps brachia muscle?

Answer 8

Third Class Lever

Question 9

If L = load, F = fulcrum, and E = effort, what type of lever system is described as LEF?

Answer 9

Third Class Lever

Question 10

Which of these is NOT a way of classifying muscles?

Answer 10

the type of muscle fibers

Question 11

Although all skeletal muscles have different shapes, the fascicle arrangement of each muscle is exactly the same (True or False)

Answer 11

False

Question 12

Muscles are only able to pull, they never push (True or False)

Answer 12

True

Question 13

Regardless of type, all levers follow the same basic principle: effort farther than load from fulcrum = mechanical advantage; effort nearer than load to fulcrum = mechanical disadvantage (True or False)

Answer 13

True

Question 14

What is a muscle that provides the major force for producing a specific movement called?

Answer 14

An Agonist (prime mover)

Question 15

What is the main factor that determines the power of a muscle?

Answer 15

The total number of muscle fibers (cells) available for contraction and the nuber of motor units

Question 16

When the term biceps, triceps, or quadriceps forms part of a muscle’s name, what does it tell you about the muscle?

Answer 16

The muscle has two, three, or four origins, respectively

Question 17

Which of the following describes a bipinnate pattern of fascicles?

a) An arrangement that looks like many feathers side by side
b) An arrangement in which the fascicles insert into only one side of a tendon
c) An arrangement of five fascicles on each side of the tendon
d) An arrangement in which the fascicles insert into the tendon from opposite sides

Answer 17

D

Question 18

If a lever operates at a mechanical advantage, it means that the ______

Answer 18

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

Question 19

What type of muscle assists an agonist by causing a like movement or by stabilizing a joint over which an agonist acts?

Answer 19

Synergist

Question 20

How many cranial nerves are there?

Answer 20

12

Question 21

Transduction refers to conversion of
a) presynaptic nerve impulses to postsynaptic nerve impulses
b) stimulus energy into energy of a graded potential
c) receptor energy to stimulus energy
d) afferent impulses to efferent impulses

Answer 21

B

Question 22

Preparing the body for “Fight or Flight” response is the rule of the

Answer 22

sympathetic division

Question 23

Which of the following does NOT describe the ANS
a) a system of motor neurons that innervates smooth and cardiac muscle and glands
b) a system of motor neurons that innervates all muscle cells
c) involuntary nervous system
d) general visceral motor system

Answer 23

B

Question 24

Where would you NOT find a cholinergeric nicotinic receptor?
a) all parasympathetic target organs
b) all postganglionic neurons (cells bodies and dendrites)
c) adrenal medulla hormone producing cells
d) sarcolemma of skeletal muscle cells at neuromuscular junctions

Answer 24

A

Question 25

Control of temperature, endocrine activity, and thirst are functions associated with the a) medulla b) cerebellum c) hypothalamus d) thalamus

Answer 25

C

Question 26

Which of these effectors is NOT directly controlled by the autonomic nervous system? a) smooth muscle b) cardiac muscle c) skeletal muscle d) most glands

Answer 26

C

Question 27

Which of the following is NOT a result of parasympathetic stimulation? a) salvation b) dilation of the pupils c) increased peristalsis of the digestive viscera d) elimination of urine

Answer 27

B

Question 28

Fibers that enter and leave the sympathetic trucks without synaspoing form structures called

Answer 28

spinal nerves

Question 29

Visceral reflex arcs differ from somatic is that a) visceral arcs contain two sensory neurons b) somatic arcs contain one additional component that visceral arcs do not possess c) visceral arcs involve two motor neurons d) visceral arcs do not use integration centers

Answer 29

c

Question 30

Parasympathetic functions include a) a stimulation of heart rate and force of contraction b) allowing the body to cope with an external threat c) lens accommodation for close vision d) raising blood glucose levels

Answer 30

C