Autocrine and Endocrine System Flashcards

(61 cards)

1
Q

What makes up the CNS

A

Brain

Spinal Cord

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2
Q

What makes up the PNS

A

Cranial nerves
Spinal nerves
Ganglia
Peripheral Nerves

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3
Q

Sensory (afferent) nerves

A

Take information from the PNS to the CNS

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4
Q

Motor (efferent) nerves

A

Take information from the CNS to the PNS

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5
Q

Somatic motor neurons

A

Are voluntary

Control skeletal muscle

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6
Q

Autonomic Motor neurons involuntary or voluntary? and what do they control?

A

are involuntary

control cardia muscle, smooth muscle and glands

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7
Q

Nerve impulse transmissions travel

A

From the presynaptic neutron to the post synaptic neuron

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8
Q

parts of a nerve synapse

A

Pre-synaptic neuron
Post-synaptic neuron
Synpatic cleft

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9
Q

what do nerves do

A

coordinate our actions and bodily functions

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10
Q

When does the Alarm response occur

A

when there is a threat

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11
Q

When does the Relaxation response occur

A

during a rest period

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12
Q

What is the sympathetic division associated with

A

Exercise
Emotion
Excitement

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13
Q

What is the parasympathetic division associated with

A

Repletion
rest
relaxation

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14
Q

Sensory input of the Autonomic system

A

Interoceptors

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15
Q

Sensory input of the Somatic system

A

Special senses

Somatic Senses

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16
Q

Control of Output in the Autonomic system and what does it control?

A

Involuntary:

Limbic system, Hypothalamus, Brain stem, Spinal cord

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17
Q

Control of output in the Somatic system

A

Voluntary:

Cerebral cortex

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18
Q

Effectors of the Autonomic system

A

Smooth muscle, Cardiac muscle, Glands

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19
Q

Effectors of the Somatic system

A

Skeletal muscle

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20
Q

What hormones does the Somatic Nervous System use ?

A

Acetylcholine

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21
Q

What hormone does the Autonomic Nervous System use?

A

Acetylcholine and Norepinephrine

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22
Q

Myelination of the Somatic Nervous System

A

myelinated

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23
Q

Myelination of the Autonomic Nervous System

A

myelinated until the Autonomic Ganglion and then unmyelinated

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24
Q

When is Norepinephrine vs AcH used in the Sympathetic Division

A

AcH is used to target the sweat gland

Norepinephrine is used everywhere else

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25
Somatic Motor Neuron pathway
One neutron pathway
26
Autonomic Motor Neuron pathway
Pre and post ganglionic
27
Raynaud Disease
Excessive sympathetic stimulation following emotional stress or cold exposure Chronic vasoconstriction
28
What does the Hypothalamus control internal organs via
Autonomic Nervous System | Pituitary gland
29
What does the Hypothalamus regulate?
Behaviour patterns Circadian rhythm Body temperature Eating and Drinking
30
Endocrine Hormones
Hormones go through blood capillaries to target faraway cells
31
Paracrine Hormones
target nearby cells
32
Autocrine Hormones
target the same cell
33
What does the HPA do?
regulate growth, development, metabolism and homeostasis
34
Hypothalamus
has 9 hormones | releasing and inhibiting hormones to control the pituitary
35
Pituitary
7 hormones | controlling endocrine organs
36
What is the Adrenal Medulla stimulated by?
AcH from preganglionic neurons
37
Hormones released by the Adrenal Medulla
Epinephrine (adrenaline) and norepinephrine
38
Principal actions of the Adrenal Medulla
Enhance sympathetic autonomic alarm response
39
first stage of the Alarm response
Immediate burst Sympathetic autonomic activation Sustained through action of adrenal medulla
40
What does the first stage of the stress response do?
Mobilise resources for immediate physical activity | •Glucose and oxygen •Alertness and activity •Ward off danger or flee
41
Second stage of the stress response
Reduce tissue damage
42
Hormones secreted by the Adrenal Cortex
Mineralocorticoids (e.g. aldosterone) | Glucocorticoids (e.g. cortisol)
43
What is Mineralocorticoids stimulated by
Increased K+ and angiotensin 2 in blood
44
principle actions of Mineralocorticoids (Aldosterone)
Increase Na+ and water Decrease K+ in blood Increase blood volume and pressure
45
what is Glucocorticoids (cortisol) stimulated by?
ACTH from pituitary | CRH from hypothalamus
46
Principal actions of Glucocorticoids (cortisol)
Resistance creation to stress Control(dampen) inflammation Alter immune responses
47
Actions of Cortisol
Increase protein breakdown Gluconeogenesis in Liver Lipolysis in adipose tissue Altered blood vessel sensitivity to vasoconstriction Anti-inflammatory to limit tissue damage Alter immune response
48
Consequence of Increased protein break down
Amino Acids available for new protein synthesis
49
Gluconeogenesis in Liver Consequences
Glucose available for ATP production
50
Consequences of lipolysis in the adipose tissue
triglyceride and fatty acid availability
51
Altered blood vessel sensitivity to vasoconstriction
Blood pressure increase
52
Consequences of Anti-inflammatory to limit tissue damage
Slower tissue repair and wound healing
53
Consequence pf Altering the immune responsiveness
Increased susceptibility to some infections
54
What is the Alarm Response activated by?
Adrenal Medulla
55
What organs/glands is the resistance reaction associated with?
Hypothalamus, pituitary and Adrenal Cortex
56
Symptoms of the Alarm Response
``` Pounding heart Cold Sweat Pale Skin Rapid Breathing Goose Flesh ```
57
Resistance reaction symptoms
Increase glucose, fatty acids and amino acids Elevated blood pressure Reduced inflammation Altered immunity
58
What are neuro-imune activities coordinated by?
Hormones (Cortisol), Autonomic Nerves | Cytokines (immune hormones)
59
Eustress
Acute Prepares us to meet certain challenges Helpful Beneficial
60
Distress
Chronic Associated with undesirable events Potentially harmful
61
Who has a greater risk f a Cardiac Infract (heart attack)?
Habitually Hostile people creates a chronic sympathetic activation which means the heart works harder and capillaries constrict.