Ch 6A: Connective Tissue Flashcards Preview

A&P I Exam 1 > Ch 6A: Connective Tissue > Flashcards

Flashcards in Ch 6A: Connective Tissue Deck (44)
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1

Characteristics of connective tissue

cells farther apart, and held together by matrix

all C.T. is vascular, except Cartilage (avascular); nutrients and wastes can diffuse through the semi-solid matrix of Cartilage, but blood vessels cannot pass through


matrix made by fibroblasts; contains the protein Collagen which gives support, and is found in all C.T.; other proteins in matrix include Reticulin which forms a network and gives some support, and is found in glands and lymphoid tissues; and Elastin which gives some flexibility and stretch ability, and is found in the lungs and urinary bladder.

other cells in C.T. include macrophages (phagocytic); and mast cells (secrete histamine for the allergic response)

2

What are the four types of CT Proper?

1. dense regular CT (white fibrous)
2. dense irregular CT
3. Loose CT (Areolar CT)
4. Adipose Tissue (fatty tissue)

3

what is the structure of dense regular CT (White fibrous)

parallel arrangement of thick collagen fibers

4

where is dense regular CT located?

Tendons (muscle to bone) and Ligaments (bone to bone)

5

what is the function of dense regular CT

strong connection

6

what is the structure of dense irregular CT

random arrangement of thick collagen fibers;

7

what is the function of dense irregular CT

support and protection

8

where is the dense irregular CT located

dermis of the skin and capsules around kidneys

9

what is the structure of loose CT (areolar CT)

random arrangement of thin collagen fibers;

10

what is the function of loose CT

allows for passage of blood vessels and nerves;

11

where is loose CT located

dermis of skin; and muscle

12

what is the structure of adipose tissue (fatty tissue)

adipocytes embedded in loose C.T.

13

what is the function of adipose tissue

cushion / protection; temperature regulation

14

where is adipose tissue located

hypodermic of skin (subcutaneous layer), around heart, kidneys, and abdominal organs.

15

what are the two types of adipose tissue

1.white/yellow which can act as the thermo-regulator and cushion or protect
2.brown which is present in newborns, and is replaced by the white/yellow. The brown adipose tissue is mainly involved in thermoregulation.

16

what are the six types of special CT

1. cartilage
2. hyaline cartilage
3. elastic cartilage
4. fibrocartilage
5. bone
6. blood

17

what is the structure of cartilage

avascular; chondrocytes located in lacunae in a semi-solid matrix

18

what is the function of cartilage

support and flexibility

19

where is the cartilage located

joints, nose and ears

20

what is the structure of hyaline cartilage

chondrocytes in moderate collagen-rich matrix

21

what is the function of hyaline cartilage

support and some protection

22

where is hyaline cartilage located

forms semi-circular rings around trachea; keeps airway from closing; also connects ribs to sternum

23

what is the structure of elastic cartilage

chondrocytes in elastin-rich matrix

24

what is the function of elastic cartilage

support and flexibility

25

where is elastic cartilage located

ears and nostrils

26

what is the structure of fibrocartilage

chondrocytes in abundant collagen-rich matrix;

27

what is the function of fibrocartilage

support and much protection

28

where is the fibrocartilage located

intervertebral discs of vertebral column

29

what is the structure of bone

vascular; osteocytes located in lacunae in a solid matrix

30

what is the function of bone

support and
protection