Internal Surfaces of the Body

Question 1

What is meant by a ‘serous membrane’?

Answer 1

Thin, two-part membrane which line certain closed-body cavities. They envelop organs

Question 2

What is the name of the serous membrane that envelops the

i. ) Heart?
ii. ) Lungs?
iii. ) Abdominal organs?

Answer 2

i. ) Pericardial sac
ii. ) Pleural sac
iii. ) Peritoneum

Question 3

Name the 4 layers of the alimentary tract wall

Answer 3

Mucosa
Submucosa
Muscularis externae
Serosa

Question 4

What is meant by a ‘mucous membrane’?

Answer 4

Line internal tubes which open to the exterior

Eg. alimentary tract, respiratory tract, urinary tract