EduNinja

IGCSE Biology Extended14.1.2—Mammalian nervous systemTopic Practice

14.1.2—Mammalian nervous system

• Describe the mammalian nervous system in terms of: (a) the central nervous system (CNS) consisting of the brain and the spinal cord (b) the peripheral nervous system (PNS) consisting of the nerves outside of the brain and spinal cord

Question 1(a)(ii)

[Maximum number: 1]

Homeostasis is the maintenance of a constant internal environment.

Human skin is involved in the maintenance of a constant internal body temperature.

State the name of the organ that coordinates the control of body temperature.

Fig. 1.1 shows a diagram of a section through human skin.

Fig. 1.1

Fig. 1.1

Question 1(a)

[Maximum number: 1]

Complete the sentence about the nervous system.
The brain and spinal cord form the ...................... nervous system and the nerves coming into and out of the spinal cord are part of the ...........................nervous system.

Question 1(a)(ii)

[Maximum number: 5]

Fig. 1.1 is a diagram showing parts of two organ systems that are active when a person sneezes.

Fig. 1.1

Fig. 1.1

view of part of the gas exchange system view of part of the nervous system

Table 1.1 shows the names and functions of some of the parts of the human body that are involved when a person sneezes, and the letters in Fig. 1.1 that identify these parts.

Complete Table 1.1.

Table 1.1

Table 1.1

Question 2(a)

[Maximum number: 3]

The nervous system coordinates the responses of animals to changes in their environment.

Fig. 2.1 shows the arrangement of the nervous system in a mammal.

Complete Fig. 2.1 by writing the names of the missing parts of the mammalian nervous system in the boxes.

Fig. 2.1

Fig. 2.1

Question 3(b)(ii)

[Maximum number: 1]

Fig. 3.2 is a diagram of a rod cell and a cone cell from a human eye.

Fig. 3.2

Fig. 3.2

State the names of the two parts of the mammalian central nervous system.

1
2

Question 23

[Maximum number: 1]

What does the central nervous system consist of?

A

brain, spinal cord and peripheral nerves

B

brain and spinal cord only

C

brain only

D

spinal cord and peripheral nerves only

Question 25

[Maximum number: 1]

Which numbered parts form the central nervous system?

Question image
A

1 only

B

1 and 2

C

2 and 3

D

3 only

Question 4(c)(ii)

[Maximum number: 1]

A neurone is a type of specialised animal cell.

Fig. 4.1 shows parts of two neurones. The area in the dashed circle has been magnified.

Fig. 4.1

Fig. 4.1

State where in the body the neurones in Fig. 4.1 would be found.

Question 4(a)(ii)

[Maximum number: 1]

Neurones are part of the nervous system. Neurones are connected to each other by synapses.

The nervous system is made up of the central nervous system and the peripheral nervous system.

State the names of the organs that make up the central nervous system.

0 selected