Unit 3 Quiz

Question 1

In an examination of a sample of muscle tissue, you notice that the sample consists of striated cells with multiple nuclei in each cell. This suggests that the sample is from which of following types of muscle?

Answer 1

Skeletal

Question 2

Impulses that move down the T-tubule of a muscle fiber initially cause

Answer 2

Release of Ca+ from the SR

Question 3

The ——— is the plasma membrane of a muscle fiber

Answer 3

Sarcolemma

Question 4

Which of these pathways the quickest means for a muscle fiber to produce ATP?

Answer 4

Creatine phosphate pathway

Question 5

Fast-twitch muscle fibers have which of the following characteristics

Answer 5

Fewer mitochondria
Rely of glycolysis and PCr systems
Primarily anaerobic
Provide quick release of energy

Question 6

A ——— is an injury to muscle due to twisting or stretching

Answer 6

Strain

Question 7

Which of the following is not a role of the muscular system in homeostases in the body?
- produce movement
- excitability
- produce heat
- contractility

Answer 7

All of these

Question 8

True or false: tendons link bone to bone, while ligaments link to muscle to bone

Answer 8

False

Question 9

True or false: the term hypertrophy reverses to an increase in muscle cell size

Answer 9

True

Question 10

What refers to the neuron parts receivers signals from sensory receptors of other neurons?

Answer 10

Dendrites

Question 11

The neuroglia cells that form myelin sheaths in the CNA?

Answer 11

Oligodendrocytes

Question 12

When the action potential begins, sodium gates open, allowing Na+ to cross the membrane.
This causes the charge on the inside of the neuron to become?

Answer 12

More positive

Question 13

The regulation of the information that is to be relayed to memory is the function of the

Answer 13

Hippocampus

Question 14

What correctly describes the distribution of ions on either side of an axon when it is not conducting a nerve signal?

Answer 14

More sodium ions outside and more potassium ions inside

Question 15

What is a depressant of the CNS?
- cocaine
- methamphetamine
- ecstasy
- alcohol
- caffeine

Answer 15

Alcohol

Question 16

The sympathetic division of the autonomic system does not cause

Answer 16

The gastrointestinal tract to digest food

Question 17

What is the resting membrane potential of a nerve cell?

Answer 17

-70mV

Question 18

True or false: the sodium-potassium pump exchanges 3 sodium out every 2 potassium in

Answer 18

True

Question 19

Which receptor detect stimuli within the body

Answer 19

Interoceptors

Question 20

What receptor detects changes in PH, or a specific molecule in the environment, would be classified as what?

Answer 20

Chemoreceptors

Question 21

Which type of receptor detects the chemicals released by damaged tissues

Answer 21

Nociceptors

Question 22

Which type of receptor assist in the maintenance of muscle tone

Answer 22

Proprioceptros

Question 23

Where are olfactory bulbs located

Answer 23

In the nasal cavity

Question 24

Which of the following is not involved in hearing?
Auditory canal
Tympanic membrane
Ossicles
Cochlea
Semicircular canals

Answer 24

Semicircular canals

Question 25

Which structure of the eye is incorrectly matched with its function? Lens-focusing Cones-color vision Iris-regulation of light Choroid - location of cones Sclera - protection

Answer 25

Choroid - location of cones

Question 26

Which of the following structures would low you to know you were upside down, even if you were in total darkness? Utricles and saccule Cochlea Semicircular canals Tectorial membrane

Answer 26

Utricles and saccule

Question 27

Moving your head forward would detect by which of the following structures?

Answer 27

Utricle and saccule

Question 28

True or false: the correct order of the auditory ossicles from deep to the tympanic membrane is incus, malleus, and stapes

Answer 28

False

Question 29

True or false: a steroid hormone requires the use of a second messenger system to enter the cell.

Answer 29

False

Question 30

Which of the following acts as a link between the nervous system and the endocrine system? Posterior pituitary gland Anterior pituitary gland Hypothalamus Parathyroid None of these

Answer 30

Hypothalamus

Question 31

The growth hormone (GH) is released by which endocrine gland?

Answer 31

Anterior pituitary gland

Question 32

Which of the following hormones is regulated by the positive feedback? Thyroid-stimulating hormone (TSH) Gonadotropic hormone Oxytocin Growth hormone None of these

Answer 32

Oxytocin

Question 33

Which of the following hormones increased blood calcium levels Calcitonin Parathyroid hormone Thyroxine Mineralocorticoids

Answer 33

Parathyroid hormone

Question 34

What hormone is (are) not produced by the adrenal cortex? Glucocorticoid Mineralocorticoids Gonadocorticoids Epinephrine All of these are released by the cortex

Answer 34

Epinephrine

Question 35

The disease that is believed to be caused by an autoimmune response that destroys the pancreatic islets is called?

Answer 35

Type 1 diabetes Mellitus

Question 36

The hormone produced by the pineal gland to regulate the circadian rhythm is called?

Answer 36

Melatonin

Question 37

What hormone is involved with providing a feeling of fullness after a meal and thus has a role in weight distribution

Answer 37

Leptin

Question 38

The hormone antagonist to insulin is?

Answer 38

Glucagon

Question 39

a community of organisms and the physical environment in which they live, best describes which of the following

Answer 39

ecosystem

Question 40

the role of an organism in an ecosystem is called its

Answer 40

niche

Question 41

in an ecosystem, these organisms are responsible for converting solar energy to the stored energy found in organic compounds

Answer 41

producers

Question 42

the growth of the population is equal to

Answer 42

the birthrate - the death rate

Question 43

please match the following biogeochemical cycles water cycle nitrogen cycle phosphorus cycle

Answer 43

water cycle - involves transpiration and precipitation nitrogen cycle - utilizes bacteria to make compound usable by plants phosphorus cycle - rocks are the reservoir in this cycle

Question 44

the maximal growth rate of a population under ideal conditions is called the

Answer 44

biotic potential

Question 45

which of the following is not a renewable resource? fossil fuels solar energy wind energy hydropower

Answer 45

fossil fuels

Question 46

which feature is part of a sustainable society? recycling and composting use of mass transit in urban environments integrated pest management to control crop damage preservation of wetlands all of the above

Answer 46

all of the above

Question 47

which feature is associated with the sustainability of a rural society? planting cover crops when farming using green roofs designing energy-efficient transportation systems all of the above

Answer 47

all of the above

Question 48

what term best describes all of the ecosystems on earth

Answer 48

biosphere