CourseCourseConceptConceptDocumentDocument

Edexcel IGCSE Biology 2.82 Stimulus Receptor and Effector Questions

Trace a coordinated response from stimulus detection to action by locating the receptor and effector in a labelled reflex pathway.

Syllabus
First assessment 2019
Course
Biology 4BI1

Exam points

  • Identify the sensory receptor and effector in a labelled human withdrawal reflex arc.

Edexcel IGCSE Biology 2.82 Stimulus Receptor and Effector Questions question 1

[Maximum number: 2]

The diagram shows a human reflex arc with some structures labelled. It is the withdrawal reflex, which allows a person to remove their hand from a hot object quickly.

Figure for Question Edexcel IGCSE Biology 2.82 Stimulus Receptor and Effector Questions question 1 — Edexcel IGCSE Biology

Question (a)

(a)

Which structure is the sensory receptor?

A

L

B

P

C

Q

D

S

[ 1 ]

Question (b)

(b)

Which structure is the effector?

A

L

B

M

C

Q

D

S

[ 1 ]
All question bank results loaded