nervous tissue

Question 1

the cell body of the nucleus is also called

Answer 1

perikaryon

Question 2

the cell body includes what structures

Answer 2

nucleus
RER(nissl body)
Golgi apparatus
lipofuscin granules (increase with age)
neurofilaments
microtubules

Question 3

what does the axon hillock contain

Answer 3

only microtubules and neurofilaments

Question 4

what organelle does the dendrite lack

Answer 4

golgi body

Question 5

what are collateral branches

Answer 5

branches that are present on an axon

Question 6

axons terminate by successively branching called

Answer 6

telodendria

Question 7

Axoplasm, the cytoplasm of the axon contains what structures

Answer 7

microtubules, microfilaments and mitochondria

Question 8

the myelin sheath is produced by ____ in the CNS and by ___ cells in the PNS

Answer 8

oligodendrocytes, schwann

Question 9

type of neuron that possess a single axon and where is it present

Answer 9

unipolar (afferent)
present in embryonic phase (embryo)
not present in adult mammals but can be present in adult amphibians

Question 10

type of neuron that possess a single axon and a single dendrite

Answer 10

bipolar (afferent) sensory neuron

Question 11

where are bipolar neurons located

Answer 11

olfactory and bipolar cells of retina

Question 12

what type of neuron possess a single axon and more than one dendrite

Answer 12

multipolar (efferent ) motor neuron

the most abundant

Question 13

possess a single process that branches into an axon and a dendrite .. where am i found

Answer 13

pseudounipolar neuron (sensory)
present in spinal and cranial ganglia

Question 14

function of neuroglia cells

Answer 14

support and protect neurons

Question 15

neuroglia cell type that are most prevalent and provide support to brain. also form a part of the blood-brain barrier

Answer 15

astrocytes

Question 16

neuroglia cell type that is the smallest , nucleus is heterochromatic, are derived from monocytes and the function is to phagocytize

Answer 16

microglia

Question 17

neuroglia cell type line cavities of brain, associated with association of CSF, often have cilia which aid in moving CSF

Answer 17

ependymal cells

Question 18

difference between schwann cells and oligodendrocytes

Answer 18

schwann cells - PNS, produces myelin for only 1 axon.

oligodendrocytes - CNS, produce myelin for several axons

Question 19

regions along the length of a nerve fiber that lack myelin sheath. the axolemma here contains many sodium pumps

Answer 19

node of ranvier

Question 20

the jumping from one node to another

Answer 20

saltatory conduction

Question 21

type a nerve fiber

Answer 21

myelinated, thick

Question 22

type b nerve fiber

Answer 22

moderately myelinated .. thinner than type a

Question 23

type c nerve fiber

Answer 23

thin , unmyelinated , may or may not be covered by schwann cell or oligodendrocytes

Question 24

which nerve fiber would have the fastest rate of conduction

Answer 24

type a, is the thickest

Question 25

bundles of nerve fibers surrounded by connective tissue sheaths

Answer 25

nerves

Question 26

this tissue sheath surrounds nerves

Answer 26

epineurium

Question 27

this tissue sheath surrounds fascicles

Answer 27

perineurium

Question 28

this tissue sheath surrounds a nerve fiber

Answer 28

endoneurium

Question 29

ganglia

Answer 29

collection of nerve cell bodies outside the cons

Question 30

cell bodies are associated with neuroglia

Answer 30

satellite cells

Question 31

a reflex arc consists of two or more neurons , what are its parts

Answer 31

``` receptor afferent limb integrating center efferent limb effector ```

Question 32

what is in gray matter

Answer 32

neurons, nerve fibers, neuroglia cells

Question 33

what is in white matter

Answer 33

nerve fibers and neuroglia cells

Question 34

what kind of neuron is purkinjie cells

Answer 34

multipolar neuron

Question 35

blood brain barrier is formed by

Answer 35

tight junctions(main barrier) and thick basal lamina.

Question 36

cerebrospinal fluid is preset in what space

Answer 36

subarachnoid space

Question 37

CSF is produced/formed by what

Answer 37

choroid plexus

Question 38

What is the CSF reabsorbed by

Answer 38

Arachnoid villi