Chapter 4 Part 3 Flashcards Preview

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Flashcards in Chapter 4 Part 3 Deck (44):
1

Name 3 types of membranes

Cutaneous, mucous, serous

2

Describe Cutaneous membranes

In epidermis (Stratified squamous and keratinized), in dermis (Areolar and dense irregular)

3

Describe mucous membranes

Made of epithelial sheet with layer of areolar connective tissue

4

Where are mucous membranes found?

Lining hollow organs that open to the body surface

5

Describe Serous membranes

Simple squamous epithelium (Mesothelium) lying on areolar connective tissue, produces serous fluid

6

Where are serous membranes found?

Lining closed cavities; pleural, peritoneal, pericardial

7

Example of cutaneous membrane

The skin

8

Examples of mucous membrane

Mucosa of nasal cavity, of most, esophagus lining, mucosa of lung bronchi

9

Examples of serous membrane

Parietal pleura, visceral pleura, parietal pericardium, visceral pericardium, parietal peritoneum, visceral peritoneum

10

What do myofilaments contain?

Mysoin and actin

11

What do myofilaments do?

Help generate force when muscles are shorten or contract

12

Describe why muscles are a composite tissue

Contains areolar connective tissue and muscle tissue

13

3 types of muscle tissue

skeletal, cardiac, smooth

14

Function of skeletal muscle

Voluntary muscle, locomotion, manipulation of environment, facial expression

15

Location of skeletal muscle

Attached to bones or occasionally to skin

16

Function of cardiac muscle

As it contracts, it propels blood into circulation, involuntary control

17

Location of cardiac muscle

Walls of the heart

18

What distinguishes cardiac muscle from other types?

Intercalated discs

19

Function of smooth muscle

Propels substances or objects along internal passageways, involuntary control

20

Locations of smooth muscle

Mostly in walls of hollow organs

21

What types of cells does nervous tissue contain?

Neurons and neuroglia

22

Describe neurons

Generate and conduct nerve impulses; don't divide past certain age

23

Describe neuroglia

Supporting cells that nourish, insulate and protect neuron, no action potentials

24

Function of nervous tissue

Transmit electrical signals from sensory receptors to effectors

25

Location of nervous tissue

Brain, spinal cord, and nerves

26

Function of dendrites

Deliver to the neuron

27

Function of axons

Deliver info away from the neuron

28

Describe an inflammatory response

Nonspecific, local response that develops quickly and limits damage to the injury site

29

Describe an immune response

Takes longer to develop and is very specific, destroys particular organisms at the site of infection

30

Response of inflammation

Heat, redness, swelling, pain, chemicals signal blood vessels to dialte

31

Function of histamine

Increases permeability of capillaries

32

Define edema

Accumulation of fluid

33

Functions of edema

Helps dilute toxins from bacteria, brings O2 and nutrients from blood, brings antibodies from blood to fight infection

34

3 Parts of repair

Regeneration, fibrosis, organization

35

Describe regeneration

Replacement of destroyed tissue with the same type of tissue

36

Describe fibrosis

Proliferation of scar tissue; usually when damage is severe

37

Describe Organization of repair

Clot is replaced by granulation tissue

38

Describe tissue repair of a skin wound

1. Inflammation sets the stage (Clotting)
2. Organization restores blood supply, alert immune system, fill with granulation tissue
3. Regeneration and fibrosis effect permanent repair

39

Describe location of endoderm

Inner lining of digestive and respiratory organs (Tube within a tube)

40

Describe mesoderm

Muscle and connective tissue

41

Describe ectoderm

Nervous tissue

42

What does not regenerate well?

Skeletal muscle tissue and cartilage (weak blood supply)

43

What does not regenerate at all?

Cardiac muscle tissue and nervous tissue

44

What happens to tissues as you age?

Epithelia thins, collagen decreases, bones, muscles, nervous tissue atrophy, poor nutrition and circulation lead to poor tissue health