Human Anatomy - Tissues Flashcards Preview

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Flashcards in Human Anatomy - Tissues Deck (39):
1

What is the
ECM of bone tissue?

Solid, calcified

2

What are the main cell types of bone tissue?

Osteoblasts and osteocytes

3

What do osteoblasts do?

Secrete collagen fibres and matrix

4

What do osteocytes do?

Live in lacunae and maintain bone metabolism.

5

What is the fibre type of bone tissue?

Collagen

6

How vascularized is bone tissue?

Well

7

What is the function of bone tissue?

Support and protect organs
Provide levers and attachment sites for muscles
Store calcium, other minerals and fat
Blood cell formation

8

Where is bone tissue found?

Bones

9

What is the functional unit of bone?

Osteon

10

What is the ECM of blood?

Liquid

11

What are the cells of blood?

Erythrocytes, Leukocytes, platelets

12

What is the function of blood?

Carry respiratory gases, nutrients and wastes.

13

Where is blood located?

In the blood vessels and heart

14

Coverings and lining of membranes are composed of both _________ tissue and _________ tissue.

Epithelial + connective

15

What are the three types of membranes?

Cutaneous, mucous, serous

16

Which membrane is dry, which is wet?

Dry = Cutaneous
Wet = serous, mucous

17

Where would you find a cutaneous membrane and, what type of epithelium would be found there?

Location: Skin
Keratinized stratified squamous epithelium

18

Where do you find mucous membranes?

Lining hollow organs open to the exterior of the body.

19

Describe a mucous membrane.

An epithelial sheet underlain with a layer of lamina propria (areolar connective tissue; for mucus secreting epithelium)

20

What are the two cell types that can compose mucous membranes?

Deeper: simple columnar ciliated epithelium
Superficial: non-keratinized stratified squamous epithelium

21

Describe serous membranes.

Simple squamous epithelium lying on areolar connective tissue.

22

What do serous membranes line?

Closed cavities;
Pleural, pericardial, peritoneal

23

What cell type composes serous membranes?

Non-keratinized simple squamous epithelium (Mesothelium)

24

Describe skeletal muscle tissue.

Long, cylindrical cells
Multinucleated
Striated

25

What are the functions of skeletal muscle tissue?

Voluntary movement
Manipulation of environment
Facial expression

26

Where is skeletal muscle found?

Attached to bone (occasionally to skin)

27

Describe cardiac muscle cells.

Branching, striated cells.
Generally, uninucleate.
Cells interdigitated at inercalated discs.

28

What is the function of intercalated discs?

Keep muscle cells together so that they arent ripped apart during contraction.

29

What is the function of cardiomyocytes?

Contract to propel blood into circulatory system.
Involuntary control.

30

Where are cardiomyocytes located?

Occurs in walls of heart.

31

Describe smooth muscle cells.

Spindle-shaped cells with central nuclei.
Arranged to form sheets.
No striations.

32

What is the function of smooth muscle?

Propels substances along internal passageways.
Involuntary control.

33

Where is smooth muscle located?

Mostly walls of hollow organ.

34

What are the two cell types of nervous tissue?

Neurons and neuroglia

35

What are neurons?

Functional unit of nervous tissue.

36

What are neuroglia?

Glue together nervous tissue and support neurons.

37

There are _____ neuroglia than neurons.

More

38

What is the function of nervous tissue?

Transmit electrical signals from sensory receptors to effectors.

39

Where is nervous tissue located?

Brain, spinal cord, nerves