anatomy 1

1.

1 point

Which muscle cells have the greatest ability to regenerate?

skeletal

smooth

cardiac

no muscle can regenerate

2.

1 point

A structure that is composed of 2 or more tissues would be a(n)

organ

complex tissue

organ system

complex cell

3.

1 point

Which of the following muscles is not one of the 'hamstrings' in the posterior aspect of the thigh

biceps femoris

semimembranosus

semitendinosus

quadriceps femoris

4.

1 point

One of the principle functions of muscles is the production of body heat

True

False

5.

1 point

The muscles that are found at the opening of the body are collectively called

parallel muscles

convergent muscles

divergent muscles

circular or sphincter

6.

1 point

C6H12O6

is gluecose

all of these are correct

is a polar molecule

is a monosaccharide

7.

1 point

Passive membrane transport

movement of a substance down its concentration gradient

movement of water from an area of low concentration to high concentration

consumption of ATP

the use of transport proteins when moving substances from areas of low to high concentrations

8.

1 point

Myoglobin in muscle fibers

stores glycogen for potential chemical energy

binds to oxygen providing a reserve supply in the muscle fiber

is one of the contractile myofilaments

breaks down glycogen

9.

1 point

Isometric contraction is characterized by

no change in the length of the muscle during contraction

atrophy of the muscle due to the lack of ATP

no change in the force of contraction throughout the concentration period

a contraction time that is longer than that of an isotonic contraction

10.

1 point

What do the genioglossus, hyoglossus, and styloglossus muscles have in common?

all act on the tounge

all names indicate the relative size of the muscle

All names reflect direction of muscle fibers

each acts synergistically to elevate the jaw

11.

1 point

Muscles that cause dorsiflexion include the

tibialis anterior

tibialis posterior

gastrocnemius

fibularis longus

12.

1 point

Which of the following is a synergist of flexion of the thigh?

vastus lateralis

rectus femoris

gluteus maximus

brachioradialis

13.

1 point

A resting potential is caused by a difference in the concentration of certain ions inside and outside the cell

True

False

14.

1 point

The rotator cuff muscles include all but which of the following?

supraspinatus

infraspinatus

teres minor

subscapularis

deltoid

15.

1 point

Connective tissue surrounding a fascicle is called epimysium

True

False

16.

1 point

Calcium

stimulates the release of potassium ions from the SR

activates contracting of the actin filaments

binds to troponin causing the troponin/tropomyosin complex to shift and expose the active site of actin

initiates depolarization of the sarcoplasmic reticulum

17.

1 point

What is the ratio of fatty acids to glycerol in neutral fats?

2:1

1:1

4:1

3:1

18.

1 point

Although all skeletal muscles have different shapes, the fascicle arrangement of each muscle is exactly the same

True

False

19.

1 point

What level of protein structure is represented by the coiling of the protein chain backbone into an alpha helix?

quanternary structure

primary structure

tertiary structure

secondary structure

20.

1 point

An anaerobic metabolic pathway that results in the net production of two ATP molecules per one molecule of glucose plus two pyruvic acid molecules is

hydrolysis

the citric acid cycle

glycolysis

the electron transport chain

21.

1 point

In flexing the forearm at the elbow, the

biceps brachii acts as an antagonist

triceps act as an antagonists

brachialis acts as an antagonist

triceps is the prime mover

22.

1 point

Which of the following would not be a functional characteristic of life?

responsiveness to external stimuli

maintance of boundaries

movement

decay

23.

1 point

Which of the following would be considered an organic molecule?

NaCl

NaOH

CH4

H20

24.

1 point

Muscles that produce movements directly apposing another set of muscles are known as

complementary muscles

contrasting muscles

antagonistic muscles

obnoxious muscles

25.

1 point

The force of muscle contraction is controlled by multiple motor unit summation or recruitment

True

False

26.

1 point

The neurotransmitter released at all neuromuscular junctions in skeletal muscle is acetylcholine

True

False

27.

1 point

A prime mover of the arm that acts in adduction would be the deltoid

True

False

28.

1 point

Which of the following is not one of the muscles that enable ventilation or breathing?

external intercostals

diaphram

pectineus

internal intercostals

29.

1 point

Which of the following does NOT function as an extensor muscle?

rectus abdominis

rectus femoris

gluteus maximus

lattissimus dorsi

30.

1 point

Most voluntary movements of the body are results of isometric contractions

True

False

31.

1 point

Which organelle of a muscle cell provides the most ATP for metabolic activity?

mitochondria

granules of glycogen

ribosomes

terminal cisterns

32.

1 point

Some hormones enter cells via

pinocytosis

exocytosis

receptor-mediated endocytosis

primary active transport

33.

1 point

During Isotonic contractions of skeletal muscle the

troponin shortens

Calcium binds with ATP

Sarcomeres shorten

tropomyosin breaks down calcium

34.

1 point

The Sartorius flexes two different joint when it contracts

True

False

35.

1 point

Amino acids joining together to make a polypeptide is a good example of a(n)

reversible

synthesis

exchange

decomposition

36.

1 point

The chewing muscle covering the ramus of the mandible causing elevation is the buccinators

True

False

37.

1 point

Which of the following muscles is names according to its orgin and insertion?

trapezius

biceps femoris

adductor brevis

sternocleidomastoid

38.

1 point

In a relaxed muscle

tropomyosin blocks attachment of myosin heads to actin

tropomyosin is moved out of the way so that cross bridges can form

myosin ATPase is activated

the concentration of sarcoplasmic calcium is high

39.

1 point

Which of the following is NOT considered a factor in influencing a reaction?

Temperature

Time

Particle size

Concentration

40.

1 point

If tRNA had a AGC anticodon, it could attach to a(n) mRNA codon

AUG

UCG

UGA

TCG

41.

1 point

Red skeletal muscles appear red because they contain a protein similar to hemoglobin called glycogen

True

False

42.

1 point

If Pepsi has a pH of 4 and lemon juice has a pH of 2 then

Pepsi is basic and lemon juice is acidic

Lemon juice has 100 times more Hydrogen atoms per volume of Pepsi

Pepsi has more Hydrogen atoms per volume than lemon juice

Lemon juice has 10 times more Hydrogen ions per volume of Pepsi

43.

1 point

Which of the following muscles has its origins and insertions separated by two different joints?

gluteus maximus

supraspinatus

deltoid

semitendinosus

44.

1 point

During contraction of a muscle both A (dark) bands and I (light) bands get shorter

True

False

45.

1 point

The muscle tone is the small amount of tautness or tension in the muscle due to weak, involuntary contractions of its motor units

True

False

46.

1 point

The single most abundant chemical substance of the body, accounting for 60-80% of body weight is

oxygen

protein

hydrogen

water

47.

1 point

Which is the following muscles inserts by the calcaneal tendon?

gastrocnemius

anterior tibialis

semitendinous

rectus femoris

48.

1 point

The cell membrane of the muscle is known as the

epimysium

perimysium

endomysium

sarcolemma

49.

1 point

Between contractions of skeletal muscle fibers calcium is stored in the sarcoplasmic reticulum (terminal cisternae)

True

False

50.

1 point

Which of the following constitutes a long chain of simple sugars?

protein

monosaccharide

nucleic acid

polysaccharide