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Flashcards in Tissues Deck (68)
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1

What are tissues?

A group of related cells that work/join together to carry out specific functions

2

What are the four main types of tissue?

Epithelial, connective, muscle, nervous

3

What is the general purpose of epithelial tissue?

-Is the lining of surfaces
-secretes parts of basement membranes

4

What is simple cuboidal tissue?

An epithelial tissue which lines ducts and tubes, allowing material to pass
(found in kidney tubules/sweat ducts/thyroid gland/breast tissue)

5

Structure of simple cuboidal tissue?

Single cellular, cube shaped with spherical nuclei

6

What is simple columnar tissue?

An epithelial tissue associated with cilia - Cilia transports the flow of dirty mucus to the exterior
(found in the trachea/bronchi/villi in the small intestine)

7

Structure of simple columnar tissue?

A tall and deep cell, single cell layered, with slightly oval nuclei, found near goblet cells (GC's secrete mucus)

8

What is simple squamous tissue?

An epithelial tissue which allows materials to pass through via diffusion and osmosis
(found in lung alveoli/blood capillaries/bowman's capsule of nephrons)

9

Structure of simple squamos tissue?

Very flat and scaly, single cell layer - delicate and thin cells where each nucleus forms a lump in the middle of the cell

10

What is simple ciliated tissue?

A type of epithelial tissue where the cilia are tiny hair like structures on the surface of the cell which sweep dust/hair/bacteria up to the back of the throat

11

What is compound simple tissue?

An epithelial tissue made up of multiple layers of cells which hamper the passage of material
(vagina/mouth/tongue are all lined by stratified epithelial layers of either squamous/cuboidal/columnar cells)

12

What is compound keratinised tissue?

A type of compound epithelial tissue which is the outer layer of skin cells that have died and hardened - the layer protects tissues underneath - make up external layer of skin and stomach lining

13

What is connective tissue?

The tough tissue binding internal structures together - providing support/elasticity.
Forms large parts of: skin/tendons/joints/ligaments/blood vessels/muscles

14

What are the 6 types of connective tissue?

Blood
Cartilage
Bone
Lymph
Areolar tissue
Adipose tissue

15

What is cartilage?

Smooth/firm substance protecting bone ends from friction - forms major part of nose and ear flaps

16

What is bone?

A harder substance than cartilage which can be worn away - designed to weight bear and protect vital organs (limb bones are hollow)

17

What are the three major compartments of bone?

Calcium salts (form around collagen fibres to give bone its hardness)
Collagen fibres (offer ability to bend under strain)
Bone cells (osteocytes)

18

What do calcium salts do?

form around collagen fibres - giving the bone its hardness

19

What do collagen fibres do?

Offer some flexibility - allow the bone to bend under strain - preventing the bone being too brittle

20

What are bone cells called?

Oeteocytes

21

What is areolar tissue?

Most common connective tissue (also known as loose connective tissue)
It is a sticky white material which binds muscle groups together

22

Structure and elements of areolar tissue?

Semi fluid containing collagen fibres and elastic fibres - elastic fibres giving flexibility to the tissue

23

What is the dermis?

A deeper skin layer which is made of a denser type of areolar tissue with extra fibres and cells

24

What is adipose tissue?

Fatty tissue - loose connective tissue in which adipose(fat) cells have multiplied - usually under the skin and around organs

25

Purpose of adipose tissue?

Store energy in the form of fat, helps insulate body, protects against injury

26

What are the three types of muscle tissue?

Striated
Non-striated
Cardiac

27

What do all three types of muscle tissue have in common?

All muscles respond to stimuli
Each tissue is composed of muscle fibres capable of shortening (contracting) and returning to their original state (relaxing)

28

Contraction causes movement of the ...

Skeleton, soft tissue, blood, also urine/faeces/food

29

What is striated muscle tissue?

Connective tissue attached to bones e.g. some facial muscles are attached to skin

30

How does striated muscle work?

Contracts when it receives impulses by conscious thought from the CNS