Chapter 3: Biological Foundations of Health and Illness Flashcards

1
Q

What is the Nervous System?

A

The body’s speedy, electrochemical communication system

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2
Q

What does the sensory nerve focus on?

A

Input to the brain/spinal cord

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3
Q

What do the motor nerves focus on?

A

Output from the brain/spinal cord to muscles and organs

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4
Q

What consist of all the nerve cells?

A

Central and Peripheral Nervous System

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5
Q

What does CNS stand for?

A

Central Nervous System

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6
Q

Where is CNS?

A

Brain and spinal cord

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7
Q

What does PNS stand for?

A

Peripheral Nervous System

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8
Q

What does the PNS comprise of?

A

The sensory/motor nerve fibers that connect the CNS to the rest of the body

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9
Q

What is the Somatic Nervous System?

A

Links the CNS with skeletal muscles

VOLUNTARY

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10
Q

What is the Automatic Nervous System?

A

Links the CNS with interal organs

INVOLUNTARY

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11
Q

What part is the Automatic Nervous System?

A

Peripheral NS

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12
Q

What does the Automatic Nervous System control?

A

The glands and the muscles of the internal organs

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13
Q

Where is the Sympathetic nervous system located?

A

Divisions of the autonomic NS

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14
Q

What does the Sympathetic nervous system control?

A

Arouses the body, mobilizing its energy in stressful situations

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15
Q

Where is the Parasympathetic nervous system?

A

Division of the autonomic nervous system

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16
Q

What does the Parasympathetic nervous system control?

A

Calms the body, conserving its energy

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17
Q

What is under the PNS?

A

Autonomic and Somatic NS

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18
Q

What is under the Autonomic NS?

A

Sympathetic and Parasympathetic nervous system

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19
Q

What is the order of an impulse?

A

Dendrities
Axon
Terminals
Synapses

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20
Q

What is an example of neurotransmitters (NT)?

A

Serotonin
Dopamine
GABA

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21
Q

What is GABA?

A

inhibitory of behaviors verbal and actions

Affected by age and alcohol

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22
Q

What is in the Hindbrain?

A

Cerebellum
Medulla
Pons

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23
Q

What is involved in Cerebellum?

A

Helps coordinate voluntary muscle movement.

Maintenance of balance

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24
Q

What is involved in the Medulla?

A

Controls heart rate, blood pressure, and breathing

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25
What is involved in Pons?
Link between hindbrain and midbrain Helps control breathing
26
Where is the midbrain?
Pathway between hindbrain and forebrain
27
What is the Midbrain in charge of?
Coordination of visual and auditory reflexes Sustantia nigra Superior Colliculus
28
What is the Sustantia nigra?
Neurotransmitter dopamine Attention memory problem solving
29
What is Superior Colliculus?
Receives input from the retina and the visual cortex
30
What is in the Forebrain?
Limbic System Cerebrum/Cerebral Cortex
31
What is the Limbic System?
Neural structures at the border of the brainstem and cerebral hemispheres
32
What is associated with the Limbic System?
Emotions and certain drives
33
What was included in the Limbic System?
amygdala hippocampus hypothalamus
34
What is the Amygdala?
Neural clusters that are components
35
What is the Amygdala linked to?
Emotions
36
What is the Hippocampus involved in?
Cognitive processes such as spatial orientation, learning, memory
37
What is the hypothalamus?
Directs several maintenance activities eating, drinking, body temperature
38
What does the hypothalamus govern?
Endocrine system via the pituitary gland
39
What is the hypothalamus linked to?
Brain's reward system
40
What lobes are included in the cerebral cortex?
Frontal lobes Parietal lobes Occipital lobes Temporal lobes
41
What is the cortex included in the cerebral cortex?
Motor cortex Association cortex Sensory cortex
42
What is the frontal lobe?
Executive Making plans and judgements Muscle movements Speech production
43
What does frontal lobe contain?
Motor cortex
44
What does the Parietal Lobes?
Receives information from skin and body Involved in representing space/your relationship to it
45
What does the Parietal Lobe includes?
Sensory cortex
46
What does the occipital lobe include?
The visual areas
47
What does the occipital lobe do?
Receive visual information from the opposite visual field
48
What does the Temporal Lobe include?
The auditory areas
49
What does the Temporal Lobe do?
Retention of visual memories Major role in speech comprehension
50
Where is the Motor Cortex?
The rear of the frontal lobe
51
What does the Motor cortex do?
Control voluntary movements
52
Where is the Sensory Cortex?
Front of the parietal lobe
53
What does the sensory cortex do?
Registers and processes body sensations
54
Where is the Association Cortex?
Areas of the cerebral cortex
55
What is the Association cortex involved in?
In higher mental functions. Learning, remembering, thinking, and speaking
56
What is the Endocrine System?
Slow chemical communication system A set glands that secrete hormones into the bloodstream
57
What are hormones
Chemical messengers
58
What produces hormones?
By the endocrine glands and in one tissue and affect another tissue
59
What is involved in Adrenal Gland?
Adrenal medulla Adrenal cortex
60
Where are the adrenal glands located?
Above the kidneys
61
What does the Adrenal medulla secrete?
Epinephrine (adrenaline) Norepinephrine (noradrenaline)
62
What does the Adrenal medulla help with?
Help arouse the body in times of stress
63
What does the adrenal cortex secrete?
Cortisol
64
What does the adrenal cortex help with?
Help to reduce swelling and inflammation
65
What is involved in the Master-Control System
Pituitary Gland Hypothalamus
66
What is the Pituitary gland?
Under the influence of the hypothalamus Regulates growth and control other endocrine glands
67
What is the hypothalamus?
CRH which is linked to pituitary glands
68
What does the thyroid gland help with?
Helps regulate growth and metabolism
69
What does the thyroid secrete?
Hormones are secreted by the parathyroid glands regulate level of calcium in the body
70
What are the two main things in the Pancreas?
Glucagon and Insulin
71
What does the glucagon include?
Increase the concentration of glucose in the blood
72
What does the insulin control?
Insulin controls the conversion of sugar and carbohydrates into energy --> DECREASES blood sugar levels
73
What is Cushing's Syndrome?
Rare
74
What causes Cushing's Syndrome?
Result of excess production of cortisol by the adrenal glands Overproduction can be caused by a tumor in the pituarty/adrenal glands
75
What are the symptoms of Cushing's Syndrome?
Upper body obesity w/ thin arms and legs Round face Increased fat around neck or fatty hump b/w the shoulders Reddened thin fragile skin that is slow to heal Reddish blue stretch marks Bone and muscles weakness Severe fatigue High blood pressure/blood sugar levels Irritability and anxiety or depression