Lecture 2: Nerve Histoogy Flashcards

1
Q

Give the definition of tissue

Name the 5 different types of tissue

A

A group or layer of similarly specialised cells together performing specialised functions

  1. Epithelia
  2. supporting
  3. Muscle
  4. Nervous
  5. Round cells (blood ?)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is epithelia?

A
  • Covers/ lines body surfaces, tubes and cavities
  • form active interfaces (secretion, absorption, protection)
  • closely adherent via cell junctions
  • supported by a basement membrane
  • blood vessels do not cross the basement membrane
  • single or multi layered
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the epithelial types?

A

Cuboidal: square, lines ducts, tubules, they excrete, secrete and absorb
Columnar: elongated basal nuclei, highly absorptive (SI, gall bladder, and stomach lining, they may have micro villi to increase surface area
Pseudostratified, ciliated, columnar: have nuclei at different heights, cilia, larger airways, propel mucus along
Stratified squamous: mainly protective

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

What are the types or connective tissues?

A

Loose connective tissue: eg supports epithelia of gut, skin,
respiratory tract etc
Dense connective tissue:
Other connective tissues: ligaments, tendons, cartilage, bone, fat

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

What are the 3 types of muscle cells?

A
  1. Skeletal: striated, voluntary, strong and fine control
  2. Smooth: involuntary, prolonged, low force
  3. Cardiac: spontaneous and strong
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are round cells?

A

Meh

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

What are the types of nervous tissue ie cells?

A

Glial cells: oligodendrocytes, astrocytes, microglia, ependyma

Astrocytes: mechanical support, help repair damage, mediate metabolic exchange between neurones, have antioxidant role, control intercellular environment
Oligodendrocytes: myelinated in CNS, they are the dominant glial cells in the CNS
Microglia: have macrophage activity in the CNS once activated

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