Tissues 4: Nerve

Question 1

Each hemisphere of the brain is coventially sperated into 4 functionally distinct regions Name the regions

Answer 1

Frontal Lobe Parietal Lobe Temporal Lobe Occipital Lobe

Question 2

Lable the diagram below add pic

Answer 2

add pic

Question 3

What are the ridges in the brain called? What are the valleys in the brain know as?

Answer 3

gyri-ridges Sulci-Valleys add pic

Question 4

What does the brainstem consist of?

Answer 4

Midbrain Pons Medulla( in descending order) add pic

Question 5

What is the role of the cerebeluum?

Answer 5

Important role in motor coordination, balance & posture

Question 6

Draw a unipolar Nuerone

Answer 6

1 axonal projection add pic

Question 7

Draw a Psuedo-unipolar nuerone

Answer 7

Single axonal projection that divides into two add pic

Question 8

Draw a Bi-polar nuerone

Answer 8

2 projections from cell body add pic

Question 9

Draw a multipolar nuerone?

Answer 9

Multipolar: Numerous projections from cell body add pic

Question 10

Where are purkinje cells found?

Answer 10

cerebellum

Question 11

Where are golgi cells found?

Answer 11

cerebellum

Question 12

Draw a pyrimidal, purkinje and golgi cell?

Answer 12

add pic

Question 13

Name some features of a Nuerone?

Answer 13

Excitable cells of CNS Heterogeneous morphology Non-dividing cells

Question 14

What is the function of a nuerone?

Answer 14

A mature nueron is a non-dividing excitable cell whose main function is to recieve and transmit information in the form of electrical signals.

Question 15

Name some distinguishing physical features which all nuerones share?

Answer 15

Soma(cell body) Axon Dendrites

Question 16

What part of the nuerone is covered in myelin?

Answer 16

Axon

Question 17

Are dendrites covered in myelin?

Answer 17

no

Question 18

Lable the diagrom of a nuerone add pic

Answer 18

add pic

Question 19

What cells are the most abundant within the CNS and are able to proliferate?

Answer 19

Astrocytes add pic

Question 20

Name some functions of Astrocytes?

Answer 20

Structural cells

Cell repair

Immune cells & are considered ‘facultative macrophages’

Neurotransmitter release & reuptake

Question 21

What are the names of the myelin producing cells of the CNS?

Answer 21

Oligodendrocytes Schwann Cell

Question 22

What is the name of the myelinating cell of the CNS

Answer 22

Oligodendrocytes

Question 23

What is the name of the myelinating cell of the peripheral nervous system

Answer 23

Schwann Cell

Question 24

Sketch a oligodendrocyte and Schwann cell

Answer 24

add pic

Question 25

What are the differences between oligodendrocytes and Schwann cells?

Answer 25

One oligodenrodcyte myelinates many axons One Schwann cell myelinates one axon segment Oligodendrocytes are found in the CNS Schwann cells are found in the peripheral nervous system

Question 26

What is the role of Microglial cells?

Answer 26

Specialised cells - similar to macrophages Perform immune functions in CNS

Question 27

What is the role of Ependymal cells

Answer 27

Epithelial cells - line fluid filled ventricles Regulate production & movement of cerebrospinal fluid (CSF)

Question 28

Sketch microglial and ependymal cells

Answer 28

add pic

Question 29

Name the 5 main cells of the CNS?

Answer 29

Neurone- Excitable cells of CNS Responsible for electrical transmission Oligodendrocyte Glial cell - produces myelin Astrocyte- Most abundant cell type in CNS Microglia cells- Neuronal macrophages Ependymal Epithelial cells lining the ventricles Four different types of glial cells found in the central nervous system: ependymal cells, astrocytes, microglial cells, and oligodendrocytes

Question 30

What is the function of the frontal lobe

Answer 30

The frontal lobes are involved in motor function, problem solving, spontaneity, memory, language, initiation, personality, judgement, impulse control, and social and sexual behavior PERSONALITY

Question 31

What is the role of the occipital lobe?

Answer 31

Processing of visual information

Question 32

What is the role of the Temporal lobe?

Answer 32

Processing sensory input. The temporal lobe is involved in primary auditory perception, such as hearing, and holds the primary auditory cortex. Contains important structures such as the hippocampus( short term memory), the amygdala (behavior) and wernike's area (auditory perception and speech)

Question 33

Role of the perietal lobe

Answer 33

It functions in processing sensory information regarding the location of parts of the body as well as interpreting visual information and processing language and mathematics.

Question 34

What is the role of the cerebellum?

Answer 34

Has an important role in motor coordinationn, balance and posture

Question 35

Add part about Action potential

Answer 35

Add part about action potentiaL

Question 36

Add part about synapse

Answer 36

Add part about synapse