AT 1: Membranes

Question 1

What is a membrane?

Answer 1

A thin sheet of tissue or layer of cells acting as a boundary, lining or partition in an organism

Question 2

Types of membranes (2)

Answer 2

-epithelial
-connective

Question 3

Subtypes of epithelial membrane

Answer 3

-mucous
-cutaneous
-serous

Question 4

Subtype of connective membrane

Answer 4

Synovial

Question 5

Epithelial membrane structure

Answer 5

-lines internal structures or cavities
- composed of epithelium (v. Thin layer of cells) attached to a layer of connective tissue

Question 6

Epithelial membrane function acronym

Answer 6

PASR

Question 7

Functions of epithelial membrane (4)

Answer 7

-to protect underlying tissues
- to absorb
-to secrete
- to recept sensory information

Question 8

Location of epithelial membrane

Answer 8

-lines cavities that are exposed to the external environment and internal organs

Question 9

Epithelial membrane examples

Answer 9

• cutaneous membrane (skin): superficial

-mucous membrane: moist-> internal to external

-serous membranes: line cavities internally/ surround organs

Question 10

Epithelial membrane- Cutaneous membrane structure

Answer 10

The skin
3 layers (epidermis, dermis, subcutaneous)

Question 11

Epithelial membrane- cutaneous membrane function

Answer 11

To provide a barrier between the external and internal environment to prevent entry of pathogens. PROTECT

Question 12

Epithelial membrane- mucous membrane structure

Answer 12

One or more layers of epithelial cells overlying a layer of connective tissue

Question 13

Epithelial membrane- mucous membrane function

Answer 13

• to provide protection: acts as a barrier to external agents/ mucous acts to trap foreign particles
  -to provide lubrication: mucous provides lubrication, allowing for the movement of substances e.g food-> link to digestive system

Question 14

Epithelial membrane-mucous membrane examples

Answer 14

Digestive tract (mouth, oesophagus)
Respiratory tract (nose, pharynx)-> link mucous lining respiratory tract e.g in nose traps foreign particles and prevents them from entering lungs

Question 15

Is serous membrane deep or superficial

Answer 15

Deep

Question 16

Serous membranes acronym

Answer 16

PIC
VOO

Question 17

PIC

Answer 17

Parietal inside cavity

Question 18

VOO

Answer 18

Visceral outside organ

Question 19

Parietal serous membrane description

Answer 19

The part of serous membrane that sits on the inside of the cavity (furthest from organ)

Question 20

Visceral serous membrane description

Answer 20

The part of serous membrane that sits on the outside of the organ (closest to organ)

Question 21

Connective membrane- synovial membrane structure

Answer 21

Lines the cavities of the joints that move and the surrounding tendons

Question 22

Connective membrane- synovial membrane function

Answer 22

To prevent friction from damaging the tissue by secreting synovial fluid which acts to lubricate joints

Question 23

Connective membrane- synovial membrane e.g

Answer 23

Elbow and knee

Question 24

Similarity between synovial and serous membrane

Answer 24

Both synovial and serous membranes are internal membranes that lubricate cavities to decrease friction during movement

Question 25

Difference between synovial and serous membrane

Answer 25

Synovial membrane is connective membrane whereas serous membrane is epithelial membrane

Question 26

Similarity between mucous and serous membrane

Answer 26

Both mucous and serous membrane are types of epithelial membrane that are located within the body and lubricate to decrease friciton

Question 27

Difference between mucous membrane and serous membrane

Answer 27

Mucous membrane acts as a barrier to external agents and traps foreign particles to prevent entry of pathogens whereas serous membrane does not

Question 28

Similarity between mucous and synovial membrane

Answer 28

Both mucous and synovial membranes lubricate to decrease friction of movement

Question 29

Difference between mucous and synovial membrane

Answer 29

Mucous membrane is epithelial membrane whereas synovial membrane is connective membrane

Question 30

Similarity between mucous and cutaneous membrane

Answer 30

Both mucous and cutaneous membranes act as a barrier to prevent entry of pathogens

Question 31

Difference between mucous and cutaneous membrane

Answer 31

Mucous membrane can also provide lubrication, allowing for the movement of substances such as food, whereas cutaneous cannot