Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Unit 1/A Grade 12 Biology 30-1 - Nervous System > The CNS > Flashcards

The CNS Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

What two things make up the Central Nervous Sytem?

A

The Brain and Spinal Cord

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the CNS? What happens when it gets damaged? TMH

A

The B &SC -the main control centre for the nervous system
Coordinates all the mechanical and chemical actions
Receives info from the senses to process and initiate a response

Damage can effect
Temperament
Motor Control
Homeostasis (balance) (eg. Mad Cow Disease)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the two types of tissue in the CNS?

A

Grey (unmyelinated)
White (myelinated)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is Grey Matter? Why is it Grey?

A

It’s grey because it contains mostly cell bodies, dendrites and short unmyelinated axons
Found outside areas of the Brain and form the H-shaped core of the spinal cord

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is White Matter? Why is it White?

A

It’s White because it contains myelinated axons that run together in tracts
Forms the inner region of parts of the brain and outer areas of the SC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Spinal cord specs

A

Vital for communication between the brain and CNS
Starts at brain, ends at tailbone
Sensory nerves carry messages for the body to the brain and vice versa
Primary reflex centre for neural information
Has white and grey matter
It’s tissues are protected by Cerebrospinal Fluid, soft layers and the spinal column
Damage can cause paralysis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Brain specs

A

Central role in maintaining homeostasis
Very fragile organ - protected by skull and the meninges
Meninges (3 layers of tough, elastic tissues within the skull and spinal column)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the Blood-Brain Barrier?

A

A membrane that separates blood and the CNS
Protects the brain, and gives it nutrients and oxygen
Lipid soluble substances (ie caffeine, drugs, nicotine etc.) can pass through the lipid bilayer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What does Cerebrospinal fluid do?

A

It circulates through the spaces (ventricles) within the brain and spinal cord
Transports hormones, WBCs & nutrients across the B-B-B for the brain cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are General regions of the brain?

A

Hindbrain
Mind rain
Forebrain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Parts of the Hindbrain CMP

A

Cerebellum
Medulla Oblongata
Pons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Cerebellum “little brain” UcopRBm

A

Walnut shaped
Located below and behind cerebrum
Controls: unconscious coordination of posture, reflexes and body movements
Also controls: fine, voluntary motor skills (ie. hitting a tennis ball, riding a bike, writing etc.)
Receives info from specialized sensors (proprioceptors) in the skeletal muscles and joints

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Medulla (Oblongata)

A

Located at the of the Brain Stem
Connects the brain with the spinal cord
Centers that control automatic, involuntary responses (ie. Heart rate, constriction/dilation of blood vessels, rate/depth of breathing, swallowing, coughing)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Pons

A

Located above and in front of the Medulla (in the brain stem)
Relay centre between the neurons of the right & left halves of the cerebrum, cerebellum and the rest of the brain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What makes up the Brain Stem?

A

The Medulla, Pons and Midbrain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Midbrain

A

Located above the pons in the brain stem
Relays visual & auditory info between the areas of the hindbrain & forebrain
Important role in eye movement and control of skeletal muscles

17
Q

Parts of the Forebrain (drugs)

A

Thalamus
Hypothalamus
Cerebrum

18
Q

Thalamus specs

A

Known as the “great relay station”
Located at the base of the forebrain
Made up of the neurons that provide connections mainly between the forebrain & hindbrain and the sensory system & cerebellum

19
Q

Hypothalamus specs

A

Located below the Thalamus
Regulate body’s internal environment and some aspects of behaviour
Neurons that control blood pressure, heart rate, body temp. And basic drives (thirst and hunger)
Also controls emotions (fear, rage, pleasure)
Link between nervous system and endocrine system (hormones)
Coordinated actions of the pituitary gland (making/releasing hormones)

20
Q

Cerebrum (IMCL)

A

Makes up more than 4/5ths of the brain weight
It is divided into right and left cerebral hemispheres
Contains centers for intellect, memory, consciousness and language
Interprets and controls response to sensory information
Ex. Feelings of Hot and Cold
Relays visual & auditory info between the Hindbrain and Forebrain
Largest most highly developed area
Cerebral Cortex - the covering of grey matter on the outside of the cerebral hemispheres (left and right halves)
Responsible for language, memory personality, vision, conscious thought and activities associated with thinking/feeling

21
Q

What is the Corpus Callosum?

A

It links the hemispheres by a bundle of white matter and sends info from one hemisphere to the other (neurons)

22
Q

Right Brain specs

A

Responsible for holistic, intuitive thinking, visual spatial skills and artistic abilities, more creative

23
Q

Left Brain specs

A

Responsible for the segmental sequential and logical ways of thinking as well as the mathematical and linguistic skills

24
Q

Occipital Lobe specs

A

Located at the back of the brain, above the cerebellum
Receives and analyses visual info.Recognizes what is being seen

25
Q

Temporal Lobe specs

A

Located by the temples
Processing of visual info.
Main function is auditory reception
Also linked to understanding and retrieving visual and verbal memories
WERNICKE’S AREA - stores info involved in language comprehension

26
Q

Parietal lobe specs

A

Receives & processes sensory info. from the skin
Highest concentration of sensory receptors are in the face, hands and genitals
Help to process info. on body’s position & orientation

27
Q

Brain imagine techniques

A

MRI
Magnetic resonance imaging
Uses powerful magnets and radio waves to create pictures of the brain and surrounding nerve tissues
PET Scan
Position emission tomography
Uses a radioactive tracer to look for disease or injury in the brain
Shows how the brain and its tissues are working

Unit 1/A Grade 12 Biology 30-1 - Nervous System (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions