SULIT 16 4551/2

4551/2 SULIT

(b) Diagram 7.2 shows the sequence of organs and tissue that responded when a man

was attacked by a robber.

Rajah 7.2 menunjukkan urutan organ-organ dan tisu yang bergerak balas apabila

seorang lelaki diserang oleh perompak.

Diagram 7.2

Rajah 7.2

Explain the involvement of nervous system and endocrine system in this situation.

Bincangkan penglibatan sistem saraf dan sistem endokrin dalam situasi ini.

[8 marks]

[8 markah]

(c) Diagram 7.3 shows transmission of impulse through a synapse.

Rajah 7.3 menunjukkan penghantaran impuls melalui satu sinaps.

Diagram 7.3

Rajah 7.3

Explain the effect of a pain killer drug on the transmission of nerve impulses.

Terangkan kesan ubat tahan sakit ke atas penghantaran impuls saraf.

[6 marks]

[6 markah]

Eyes

Mata

Brain

Otak

Adrenal gland

Kelenjar adrenal

Liver

Hati

Lungs

Peparu

Heart

Jantung

Skeletal muscles

Otot rangka

Synapse

Sinaps

Impulse

Impuls

Impulse

Impuls

Axon terminal

Terminal akson

Dendrite

Dendrit