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Science > Unit 7E > Flashcards

Unit 7E Flashcards

1
Q

What are the 2 things that the nervous system is divided into?

A

Peripheral nervous system and central nervous system

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2
Q

What is the PNS made of

A

Made of communication pathways that connect all areas of the body to the cns

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3
Q

Nerves

A

Communication pathways in the body.

Also are axons bundles together with BV and connective tissue

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4
Q

Neurons

A

Specialized cells that transfer messages in the form of fast- moving electrical signals

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5
Q

Impulses

A

Electrical signals

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6
Q

What does the neuron structure consist of?

A

Cell body, dendrites, and axons

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7
Q

Cell body

A

The region in the center that contains a nucleus and cell organelles

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8
Q

Dendrites

A

Where a neuron receives info from other cells through short, branches extensions

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9
Q

Axon

A

Fiber where info is transmitted to other cells

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10
Q

What are the 2 types of nerve cells

A

Sensory neurons, and motor neurons

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11
Q

Sensory neurons

A

Gathers info about what is happening around your body

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12
Q

Receptors

A

Specialized structures that detect changes inside and outside the body

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13
Q

Motor neurons

A

Send impulses from the brain and spinal cord to other systems

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14
Q

Where do motor neurons send messages to ?

A

Sweat glands and muscles

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15
Q

CNS connects to the …….

A

Rest of the body via nerves

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16
Q

What does the central nervous recieve?

A

Information from sensory neurons and responds by sending messages throughout the body through motor neurons in the PNS

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17
Q

Parts of CNS include

A

Brain, spinal cord

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18
Q

Three main parts of brain

A

Cerebrum,
Cerebellum,
Medulla

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19
Q

The brain is the ________ organ in the CNS

A

Largest

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20
Q

Many processes controlled by the brain are

A

Involuntary

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21
Q

Left hemisphere

A

Directs the right side of body: verbal, analytical, logical

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22
Q

Right hemisphere

A

Directs left side of body: nonverbal, artistic, creative

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23
Q

The thinking cap of the brain is the

A

Cerebrum

24
Q

Largest part of brain

A

Cerebrum

25
Q

What is located in the cerebrum

A

Thinking, memories, and voluntary motions

26
Q

What part of your brain controls balance

A

Cerebellum

27
Q

What is the second largest part of your brain?

A

Cerebellum

28
Q

What part of your brain controls involuntary actions

A

Medulla

29
Q

What does the medulla connect

A

Medulla connects to the spinal cord

30
Q

What is the spinal cord surrounded by

A

Protective bones called vertabrae

31
Q

What type of neurons travel through the spinal cord

A

Sensory neurons

32
Q

2 basic functions of the nervous system

A

Gathers and interprets information from the environment surrounding the body and ten responds to that environment

33
Q

What type of neuron is needed to move your leg

A

Motor because it gets message from cerebrum

34
Q

What are the 3 things that the integumentary system does?

A
  1. Guards body from damage and includes your hair, skin, and nails
  2. Gets info about the environment in and around your body
  3. This info gets processed by the CNS
35
Q

Reflex

A

Quick involuntary action

36
Q

What do heat receptors in the skin detect

A

They detect heat and send impulses to your brain causing u to feel heat. In response, u sweat

37
Q

Why does the brain send messages to BV?

A

To enlarge so more blood can travel through your skin

38
Q

Sweating and cooling are interactions of……

A

The integumentary system, nervous system, and the cardiovascular system

39
Q

Main function of endocrine system

A

Controls body processes using endocrine glands. Examples of body processes are fluid balance, growth, and sexual devolpment

40
Q

Gland

A

Group of cells that makes special chemicals for your body

41
Q

Chemical messengers are controlled by……

A

endocrine system

42
Q

Hormones are made by…..

A

Endocrine gland

43
Q

Adrenal gland

A

Helps u deal with stress or anger. Make adrenaline( flight or flight response)

44
Q

Pituitary gland

A

Stimulates skeletal growth, controls water in blood, helps thyroid function, and stimulates birth in pregnet lady’s

45
Q

The hypothalamus links the

A

Nervous and endocrine systems

46
Q

Thyroid gland

A

Raises the wait at which u use energy

47
Q

Parathyroid gland

A

Controls calcium levels in blood

48
Q

Thymus

A

Regulates the immune system which fights diseases

49
Q

Pancreas

A

Controls blood sugar levels

50
Q

Testes

A

Make hormones involved in reproduction in males

51
Q

Ovaries

A

Make hormone involved in reproduction in females

52
Q

Feedback mechanism

A

Sends message to endocrine glands to start or stop sending a certain hormone

53
Q

Hormone imbalances

A

When feedback mechanism isn’t working

54
Q

Insulin hormone

A

Made by pancreas. If insulin is out of balance, diabetes happen

55
Q

Growth hormone

A

Made by pituitary gland; stunted or excess height is this condition if this hormone is out of balance

56
Q

Thyroxine hormone

A

Made by thyroid; fatigue and weight gain happen if this hormone is out of balance

57
Q

3 problems in endocrine system

A

Goiters, giantism, dwarfism

Science (13 decks)

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