Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

A&P 1 > study questions ch. 8-9 > Flashcards

study questions ch. 8-9 Flashcards

1
Q

Skeletal muscle fiber
a. can contract but are not extensible or excitable
b. possesses striations
c. are found in the walls of the stomach
d. do not require nerve innercation to contract
e. increase dramatically in number after birth

A

b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

In which of these joints are periodontal ligaments found
a. gomphoses
b. sutures
c. syndesmoses
d. sympheses
e. synovial

A

a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Cartilaginous joints
a. allow the most movement between bones
b. are not found in the pelvic region
c. unite two bones by means of fibrocartilage or hyaline cartilage
d. are common in the skull
e, none of the above

A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Osteoathritis is
a. a bacteria/infection transmitted by ticks
b. the most common type of arthritis
c. a metabolic disorder caused by increased uric acid in blood
d. a condition that may involve an autoimmune disease
e. none of the above

A

b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Which of the following statements concerning the ankle joint is true?
a. the calcaneus articulates with the tibia to form this joint
b. the lateral collateral ligament helps to stabilize this joint
c. it is a pivot joint
d. a capsule of hyaline cartilage surrounds the joint
e. most common injuries to this joint occur because of a forceful inversion of the foot

A

e

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The epiphyseal plate of a following bone is actually a temporary joint called a
a. synotosis
b. synchondrosis
c. symphysis
d. suture
e. syndesmosis

A

b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Troponin
a. is a long, flexible protein
b. has only two subunits
c. binds to ATP
d. is part of the myosin myofilament
e. has a calcium-binding site

A

e

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

An example of a symphysis is the junction between the
a. costovertebral joint
b. intervertebral disks
c. sacroiliac joint
d. elbow joint
e. temporomandibular joint

A

b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Channels that open or close in response to changes in the electrical charge or voltage across the plasma membrane are called
a. relegated ion channels
b. obligated ion channels
c. ligand-gated ion channels
d. voltage-gated ion channels
e. leak ion channels

A

d

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Arrange the following list of biochemical events in the correct sequence
1. an action potential is conducted deep into the muscle fiber by the T tubule
2. calcium ions bind to troponin
3. the membranes of the sarcoplasmic reticulum become more permeable calcium ions
4 calcium ions diffuse into the sarcoplasm around the myofibril
5. The troponin-tropomyosin complex moves exposing active sites
a. 1,5,2,3,4
b. 1,3,4,2,5
c. 1,4,3,2,5
d. 1,3,2,5,4
e. 1,2,3,4,5

A

b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

A broad tendon is referred to as a
a. aponeurosis
b. meniscus
c. muscle
d. acetylcholine
e. ligament

A

a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

An example of a saddle joint is the
a. shoulder joint
b. atlantoaxial joint
c. carpometacarpal joint
d. atlanto-occipitial joint
e. elbow joint

A

c. carpometacarpal joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is tropomyosin
a. a T tubule and two adjacent terminal cisternae
b. a long protein found along the groove of that F-actin that covers the active binding sites on actin
c. the movement of myosin head while attached to actin myofilament
d. after exercise, the oxygen taken in that exceeds the oxygen required for resting metabolism
e. the combination of myosin heads with active sites on actin molecules

A

b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What structure is made up of myofilaments Actin and Myosin
a. muscle fibers
b. myofibrils
c. nerves
d. muscles
e. muscle cells

A

b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

A synchondrosis
a. is freely moveable
b. is not found in a growing long bone
c. is a type of gomphosis
d. may be temporary
e. none of the above

A

d

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Synovial joints are different from both fibrous and cartilaginous joint because synovial joint
a. generally have both bones in the joint fused together
b. are only temporary; they are replaced in the adult
c. are not freely moveable
d. use fibrous connective tissue to hold the bones in the joint together
e. are enclosed by a joint capsule

A

e

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

In the TMJ joint, the mandible articulates with the
a. zygomatic bone
b. maxilla
c. parietal bone
d. temporal bone
e. tympanic bone

A

d

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

The sarcoplasmic reticulum
a. transmits nerve impulses to the myofibrils
b. covers the muscle fiber
c. connects adjacent sarcomeres
d. stores calcium ions
e. none of the above

A

d

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

The thick fibrocartilage disks found in the knee joint are called
a. menisi (meniscus)
b. intraknee disks
c. bursae
d. tendon sheaths
e. ligaments

A

a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

List the following structures in order from smallest to largest
1. muscle fiber
2. myofliament
3. myofibril
4. muscle fasciculus

a. 4,2,3,1
b. 2,1,4,3
c. 2,3,1,4
d. 1,2,3,4
e. 3,1,4,2

A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Both active and passive ROM are influenced by
a. shape of articular surfaces/cartilage
b. strength/location of ligaments and tendons
c. location of muscles associated with joint
d. fluid or pain in and around joint
e. all of the above

A

e

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Which of the following connective tissue layers is outside all the others
a. epimysium
b. sarcolemma
c. endomysium
d. paramysium
e. perimysium

A

a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Returning the thUmb to the anatomical position after touching the little finger is
a. medial excursion
b. supination
c. reposition
d. reposition

A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

A movement through 360 degrees that combines flexion, extension, abduction, and adduction is called
a. supination
b. hyperextension
c. pronation
d. circumduction
e. rotation

A

d

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

When an action potential reaches the presynaptic terminal
a. actylcholine moves into the presynaptic terminal
b. calcium ions diffuse into the presynaptic terminal through voltage-gated ion channels
c. ligand-gated ion channels in the presynaptic terminal are opened
d. all of the above
e. none of the above

A

b

26
Q

Which type of muscle tissue is autorhythimic
a. smooth muscle
b. cardiac muscle
c. skeletal muscle
d. both skeletal and cardiac muscle
e. both cardiac and smooth muscle

A

e

27
Q

Hypertrophy of skeletal muscles from weight lifting is caused by an increase in the
a. number of muscle cells
b. number of muscle fibers
c. size of muscle fibers
d. number of nuclei
e. number of striations

A

c

28
Q

Smooth muscle and cardiac muscle are similar in that they both
a. are under involuntary control
b. are striated
c. are widely distributed in the boyd
d. have multiple nuclei
e. are under voluntary control

A

a

29
Q

Depolarization of the cell membrane occurs when there is a rapid influx (inflow) of
a. calcium ions
b. amino acids
c. potassium ions
d. chloride ions
e. sodium ions

A

a

30
Q

Synaptic vesicles in the presynaptie terminal of the neuromuscular junction contain
a. sodium
b. calcium
c. acetylcholinesterase
d. ATP
e. acetylcholine

A

e

31
Q

Acetylcholine binds to a membrane bound receptor and causes ligand-gated sodium channels to open and results in
a. hyperpolarization
b. no change in membrane potential
c. depolarization
d. hyperpolarization
e. there is not enough information to predict the outcome

A

c

32
Q

A fasciculus
a. is only found in smooth muscle
b. is surrounded by perimysium
c. possess an external lamina
d. is a bundle of reticular fibers
e. is a bundle of collagen fibers

A

b

33
Q

The outside of the resting plasma membrane is _____ relative to the inside of the resting plasma membrane
a. electrically neutral
b. recharged
c. positively charged
d. negatively charged
e. none of these choices is correct

A

c

34
Q

Which of the following statements regarding the sliding filament model is false
a. actin and myosin do not shorten during contraction
b. the I band and H zones become narrower during contraction
c. The A band remains constant in length
d. both actin and myosin myofilaments shorten during constraction
e. the sarcomere shortens

A

d

35
Q

If a person lifts a weight by flexing at the elbow, the biceps is acting as an
a. antagonist
b. synergist with the humerus
c. agonist
d. b & c
e. none of the above

A

c

36
Q

Which of the following is true during the resting membrane potential
a. the concentration of potassium is higher inside the cell than outside the cell
b. a greater concentration of calcium ions is found inside the cell
c. sodium ion concentration is greater inside cells
d. negatively charged proteins are more concentrated outside the cell
e. none of these choices reflect what occur during the resting membrane potential

A

a

37
Q

The length of the resting sarcomere is
a. the same length as a contracted sarcomere
b. shorter than the length of a contracted sarcomere
c. the same length as the muscle fiber
d. longer than the length of a contracted sarcomere
e. none of the above

A

d.

38
Q

The subacromial bursa is associated with the _____ joint
a. elbow
b. knee
c. hip
d. shoulder

A

d

39
Q

Rotating the forearm so that the palm faces posteriorly is called
a. hyperextension
b. pronation
c. rotation
d. circumduction
e. supination

A

b

40
Q

Sergio needs to reach the bowls on the top shelf, which are slightly out of reach. Which type of movement below would give him the greatest chance of success in reaching the bowls
a. plantar flexion
b. eversion
c. dorsiflexion
d. inversion
e. none of the above

A

a

41
Q

The anterior cruciate ligament prevents ______ displacement of the tibia
a. radial
b. anterior
c. posterior
d. lateral
e. medial

A

b

41
Q

A sarcomere extends from
a. one T tubule to the next T tubule
b. the H zone to the I band
c. one Z disk to an adjacent Z disk
d. the middle of the I band to the middle of the A band
e. the M line to the next M line

A

c

41
Q

Myosin is also known as the
a. thick myofilament
b. sarcomere
c. thin myofilament
d. short myofilament
e. intermediate myofilament

A

a

42
Q

A condition in which stimuli (action potentials) occur so rapidly that there are no intervening relaxations between contractions is called
a. all or none tenaus
b. treppe
c. involuntary paralysis
d. incomplete tetanus
e. complete tetanus

A

e

43
Q

Which of the following is NOT a known effect of illegal use of anabolic steroids in large dosages
a. sterility
b. testicular atrophy
c. increased muscle size
d. liver disease
e. increased cardiovascular fitness

A

e

44
Q

Smooth muscle is regulated by all of the following except
a. hormones
b. the autonomic nervous system
c. the somatic nervous system
d. neurotransmitters

A

c

45
Q

Visceral smooth muscle
a. contracts only when stimulated
b. occurs in sheets and exhibits numerous gap junctions
c. does not function as a unit
d. may contain groups of cells that function as an independent unit
e. all of these choices are correct

A

b

46
Q

Which of the following statements concerning smooth muscle is true?
a. Caveolae seem to take the place of the myofibrils
b. it has a well developed sarcoplasmic reticulum
c. a calcium-calmodulin complex initiates cross-bridge formation
d. the call are large and multinuclear
e. it contains many sarcomeres

A

c

47
Q

Maureen is hiking in the cold, and to maintain homeostasis her body begins to
a. vasodilate vessels in her head and neck
b. increase heat loss from the skin
c. shiver
d. reduce her blood pressure
e. release chemicals to initiate a high fever

A

c

48
Q

Betsy took a fall, broke her arm, and when she took the cast off she was alarmed to see that her muscles
a. seemed to be larger than before the cast was put on
b. undergone hypertrophy
c. looked the same as they did before the fall
d. had undergone atrophy

A

d

49
Q

Consider the following four phrases and select the one that does not belong with the others.
a. anaerobic metabolism
b. fuels runner in a marathon
c. muscle fibers spilt ATP rapidly
d. lactic acid production
e. fast twitch fibers

A

b

50
Q

What is the power stroke?
A) the movement of myosin head while attached to actin myofilment
B) the combination of myosin heads with active sites on actin molecules
C) a protein found along the groove of the F-actin double helix
D) a T tubule and two adjacent terminal cisternae
E) after exercise, the oxygen taken in that exceeds the oxygen required for resting metabolism

A

a

51
Q

Rheumatoid arthritis is
A) the most common type of arthritis.
B) an inflammation of any joint.
C) a bacterial infection transmitted by ticks.
D) a metabolic disorder caused by increased uric acid in blood.
E) a condition that may involve an autoimmune disease.

A

e

52
Q

Abnormal forced extension beyond normal range of motion is called
A) supination.
B) circumduction.
C) hyperextension.
D) rotation.
E) pronation.

A

c

53
Q

What does “A” represent on the diagram?
A) Z disk
B) sarcomere
C) myosin myofilament
D) actin myofilament
E) cross-bridge

A

d

54
Q

What does “B” represent on the diagram?
A) Z disk
B) myosin myofilament
C) actin myofilament
D) cross-bridge
E) sarcomere

A

b

55
Q

What does “C” represent on the diagram?
A) depolarization
B) repolarization phase of action potential
C) depolarization phase of action potential
D) threshold

A

b

56
Q

What does “D” represent on the diagram?
A) depolarization phase of action potential
B) threshold
C) depolarization
D) repolarization phase of action potential

A

b

57
Q

Rigor mortis occurs after death because
A) cross-bridges form but can’t release.
B) cross-bridges never form.
C) calcium is actively transported back to the sarcoplasmic reticulum.
D) myosin levels decline at death.
E) anaerobic respiration is occurring.

A

a

58
Q

The cubital or elbow joint is an example of a ________________ joint.
A) ball and socket
B) plane
C) saddle
D) pivot
E) hinge

A

e

A&P 1 (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions