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Human Biology > Unit 3 Quiz > Flashcards

Unit 3 Quiz Flashcards

1
Q

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?

A

Skeletal

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2
Q

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

A

Release of Ca+ from the SR

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3
Q

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

A

Sarcolemma

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4
Q

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

A

Creatine phosphate pathway

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5
Q

Fast-twitch muscle fibers have which of the following characteristics

A

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

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6
Q

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

A

Strain

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7
Q

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

A

All of these

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8
Q

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

A

False

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9
Q

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

A

True

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10
Q

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

A

Dendrites

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11
Q

The neuroglia cells that form myelin sheaths in the CNA?

A

Oligodendrocytes

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12
Q

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?

A

More positive

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13
Q

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

A

Hippocampus

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14
Q

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

A

More sodium ions outside and more potassium ions inside

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15
Q

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

A

Alcohol

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16
Q

The sympathetic division of the autonomic system does not cause

A

The gastrointestinal tract to digest food

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17
Q

What is the resting membrane potential of a nerve cell?

A

-70mV

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18
Q

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

A

True

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19
Q

Which receptor detect stimuli within the body

A

Interoceptors

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20
Q

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

A

Chemoreceptors

21
Q

Which type of receptor detects the chemicals released by damaged tissues

A

Nociceptors

22
Q

Which type of receptor assist in the maintenance of muscle tone

A

Proprioceptros

23
Q

Where are olfactory bulbs located

A

In the nasal cavity

24
Q

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

A

Semicircular canals

25
Q

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

A

Choroid - location of cones

26
Q

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

A

Utricles and saccule

27
Q

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

A

Utricle and saccule

28
Q

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

A

False

29
Q

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

A

False

30
Q

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

A

Hypothalamus

31
Q

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

A

Anterior pituitary gland

32
Q

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

A

Oxytocin

33
Q

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

A

Parathyroid hormone

34
Q

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

A

Epinephrine

35
Q

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

A

Type 1 diabetes Mellitus

36
Q

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

A

Melatonin

37
Q

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

A

Leptin

38
Q

The hormone antagonist to insulin is?

A

Glucagon

39
Q

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

A

ecosystem

40
Q

the role of an organism in an ecosystem is called its

A

niche

41
Q

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

A

producers

42
Q

the growth of the population is equal to

A

the birthrate - the death rate

43
Q

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

A

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

44
Q

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

A

biotic potential

45
Q

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

A

fossil fuels

46
Q

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

A

all of the above

47
Q

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

A

all of the above

48
Q

what term best describes all of the ecosystems on earth

A

biosphere

Human Biology (25 decks)

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