His Lab 6 - Nervous System
Study these flashcardsFree · spaced repetition · iPhone, Android, Mac & web
All cards
1
General Characteristics of Peripheral Nervouse System
2
General chacteristics of the nervous system
3
Basic structure of neuron
4
Classifications of neurons
5
WHat is this?
Node of ranvier 
6
What is this?
In longitudinal sections (l.s.), nerves have a pale
wavy appearance with oval Schwann cell nuclei
orientated in the same direction. The axons appear
as pale acidophilic lines while the clear area around
the axon represents the leached-out myelin.
wavy appearance with oval Schwann cell nuclei
orientated in the same direction. The axons appear
as pale acidophilic lines while the clear area around
the axon represents the leached-out myelin.
7
WHat is the arrow pointing to?
8
What type of cell nuclei is this?
Schwann cell nuclei 
9
What is this?
Node of ranvier
10
What is this outside layer?
epineurium (around several bundles)
11
WHat is being outlined?
cross sections of myelinated axons are outlined || notes:In cross section (x.s.), axons appear as a pink dot
surrounded by a clear halo (myelin sheath). The
myelin, primarily lipid, is dissolved away during
tissue processing, leaving a clear space.
surrounded by a clear halo (myelin sheath). The
myelin, primarily lipid, is dissolved away during
tissue processing, leaving a clear space.
12
What type of cut is this in a peripheral nerve
cross section
13
What type of cut is this in a peripheral nerve
longitudinal
14
Classify the tissue
stratified squamous, keratinized
15
. Classify the tissue
skeletal muscle (in cross section.)
16
Classify the tissue
skeletal muscle (in longitudinal section)
17
Classify the tissue 
smooth muscle (in longitudinal section)
18
What is this? 
peripheral nerve
19
Identify the cell – 
– plasma cell
20
Identify the structure
gland duct
21
What is this?
The dorsal root ganglion with closely packed cell bodies of different sizes at the edge of the ganglion by the CT
22
What are the arrows pointing to?
Glial cells - satellite cells
23
WHat are the arrows pointing to?
Nissl substance
24
Identify the cell 
Schwann cell - PNS
25
Identify the part of the cell 
cell body
26
Identify the entire structure – 
sympathetic ganglion
27
Identify the entire structure –
dorsal root ganglion
28
Identify the structure 
– parasympathetic ganglion
29
Classify the tissue
smooth muscle (in cross section)
30
Classify the tissue
cardiac muscle (in cross section)
31
WHat is this?
Meissner’s touch corpuscle
32
What is the the yellow part?
Peripheral nerves with thick perineurium
33
. Identify the structure
Meissner’s touch corpuscle
34
Identify the structure –
Pacinian corpuscle
35
What is the arrow pointing to?
spongy bone
36
Identify the cell 
chondrocyte
37
What is ganglia?
38
What is this?
motor end plate - the special junction that the lower motor neuron forms on skeletal muscle 
39
General characteristics of the CNS
40
What is this?
neuron - cell body with nucleus and clumps of cytoplasm
41
What are the arrows pointing to?
Nissl substance
42
What are the red arrows and what are the blue ones?
red - dorsal roots blue - ventral roots
43
Identify the organ
cerebrum, specifically cerebral cortex
44
Identify the cells –
Pyramidal cells
45
What cells are these?
Purkinje cells 