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Bio Bases Final > True/False > Flashcards

True/False Flashcards

1
Q

Manipulation of the environment is a functional expression of the muscular system

A

TRUE

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2
Q

Neurological damage above the brain stem results in flaccid muscles.

A

FALSE: damage BELOW the brain stem = flaccid muscles

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3
Q

Muscle tone is the result of the integrity of muscle fibers’ elasticity.

A

FALSE. Muscle tone is the result of a systematic stimulation of the muscle by the nervous system.

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4
Q

Muscle fatigue is the result of insufficient supply of oxygen to working muscles.

A

TRUE

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5
Q

Skeletal muscles’ activity is responsible for 40% of body heat.

A

TRUE

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6
Q

Collectively, all motor neurons innervating the fibers of a single muscle are called a motor pool.

A

TRUE

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7
Q

One motor neuron can stimulate only one muscle cell.

A

FALSE: one motor neuron can stimulate several muscle cells, creating a motor unit

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8
Q

Grave’s Disease is a condition of hyperthyroidism.

A

TRUE

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9
Q

The Posterior Pituitary Gland does not synthesize hormones.

A

TRUE the hormones are synthesized in the hypothalamus

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10
Q

Anterior Pituitary Gland hormones are synthesized in the hypothalamus.

A

FALSE this is true of the posterior pituitary gland

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11
Q

The main regulatory process controlling hormonal release into the circulatory system is a positive feedback loop mechanism.

A

FALSE: both positive and negative feedback loops are used

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12
Q

Hormones are synthesized in ductless glands.

A

TRUE

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13
Q

Goiter is a condition resulting from excess iodine in the system.

A

FALSE: lack of iodine does not allow the thyroid glands to secrete hormones and causes this condition

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14
Q

Steroids have an impact on cells by activating receptors located on cell’s membrane

A

FALSE: steroids act in receptors inside target cells

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15
Q

Growth Hormone and Adrenocorticotropic Hormone are antagonistic to each other

A

TRUE

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16
Q

At 40 to 41 degrees C, protein molecules begin to break their chemical bonds

A

TRUE

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17
Q

Humans react to cold by dilating cutaneous blood level

A

FALSE: heat causes dilation, cold causes constriction

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18
Q

Thyroid secretion increases in reaction to heat

A

FALSE: thyroid secretion increases in reaction to cold

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19
Q

Fever is one of the body’s defense mechanisms in time of illness

A

TRUE: leukocytes are mobilized and fever can fight off bacterial infections

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20
Q

Low grade fever (up to about 2 degrees C) can fight off bacterial infections

A

TRUE

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21
Q

The extracellular liquid environment in the human body is about a third of the body liquid volume.

A

TRUE: interstitial fluid = 25%, intravascular (blood) = 7%, transcellular (CSF) = 1%

22
Q

Diffusion, unlike osmosis, is an active chemical force

A

FALSE: both diffusion and osmosis are passive

23
Q

Salty meals result in hypotonicity of extracellular liquid environment.

A

FALSE: salty meals result in HYPERTONICITY

24
Q

Constriction of blood vessels results in loss of blood pressure

A

FALSE: elevates blood pressure

25
Q

Some of the “head factors” involved in eating are taste and smell.

A

TRUE

26
Q

Extensive sweating can result in cravings for salt.

A

TRUE

27
Q

Insulin and glucagon are secreted by the pancreas.

A

TRUE

28
Q

Reproductive cells require cooler environment than the rest of the body

A

TRUE

29
Q

“Homeothermia” means that the constancy of body temperature is maintained regardless of environmental variations in temperature.

A

TRUE: homeotherms have a constant body temp, poikliotherms’ body temp adjusts depending on the environment

30
Q

Metabolism of brown fat is a reaction to cold

A

TRUE

31
Q

Constriction of blood vessels leads to elevated blood pressure.

A

TRUE

32
Q

No one food has all the vitamins

A

TRUE

33
Q

Very thin adolescents experience early puberty

A

FALSE: very thin adolescents have later puberty as leptin is involved in triggering puberty

34
Q

Luteinizing Hormone activates in males testosterone secretion

A

TRUE, involved in males and females, in females ovulation and estrogen

35
Q

It is speculated that the supply of ova available for females is determined around birth

A

TRUE

36
Q

The ovarian cycle is regulated by the fluctuations of blood levels of releasing factors

A

FALSE

37
Q

Leptin is a hormone involved in regulation of food intake

A

TRUE: inhibition of leptin results in overeating

38
Q

Cortical structures are involved in our inhibitory abilities

A

TRUE

39
Q

Stress or anxiety can be explained as hypervigilance of the fight-or-flight response

A

TRUE

40
Q

The classical functional definition of memory is : “the consolidation and retention of acquired information.”

A

TRUE

41
Q

Episodic memory is usually organized regardless its temporal and spatial context.

A

FALSE: episodic memory involves context and is specific to time and place, usually a single event (slide 8)

42
Q

Testosterone facilitates aggression only in males

A

FALSE: testosterone facilitates aggression in males and androgen females

43
Q

Facial expressions are paralinguistic

A

TRUE

44
Q

Moral decision making requires emotional reactions

A

TRUE

45
Q

Research and clinical practice indicate that lesions in the hypothalamus result in impaired acquisition of conditioned emotional responses

A

FALSE: lesions in the AMYGDALA impair acquisition of conditioned emotional responses

46
Q

The amygdala is involved in provoking anger and violence, while the prefrontal cortices suppress them

A

TRUE

47
Q

Core executive emotional systems are shared by all living creatures

A

FALSE: core executive emotional systems are shared by all MAMMALS

48
Q

When the organism is engaged in flight-flight, the Sympathetic Nervous System is stimulating secretions of the adrenal cortex.

A

TRUE

49
Q

The nerve impulses activating muscle fibers at the neuromuscular junction utilize acetylcholine (Ach)

A

TRUE

50
Q

Recognition develops very early in infancy, while recall requires some language development

A

TRUE

Bio Bases Final (4 decks)

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