ConceptConceptDocsDocuments

Edexcel IAL Biology 1.7 Blood vessel structure and function

Name the wall layer or lumen feature, connect its material property to pressure or exchange and show all ratio or area working with correct units.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
AS

Exam points

  • Label arteries, veins and capillaries through wall layers, lumen size and valves.
  • Explain how elastic fibres, collagen or smooth muscle support vessel function.
  • Calculate lumen-to-wall ratios or cross-sectional areas from measurements.

1.7—Blood vessel structure and function question 1

[Maximum number: 2]

Question (a)

(a)

The diagram shows the internal structure of a mammalian heart.

Figure for Question (a) — Edexcel A-Level Biology AS
[ 2 ]

Question (i)

(i)

How many of the following are correct for blood vessel P?
- carries blood to the heart
- has valves along its length
- has an endothelial lining

A

0

B

1

C

2

D

3

[ 1 ]

Question (ii)

(ii)

Why is blood vessel Q classified as an artery?

A

because it carries deoxygenated blood

B

because it carries oxygenated blood

C

because it carries blood away from the heart

D

because it carries blood back to the heart

[ 1 ]
All question bank results loaded