2024.04.11_F3 Chapter 1

Which of the following is an example of involuntary action which involves the medulla oblongata?

• Sneezing when pollen grains enter the nose

• Withdrawal of the hand when it accidentally touches the hot iron

• Sudden blinking when an insect flies very near to the eyes

• Peristalsis

Which of the following are found in the peripheral nervous system?

I Spinal nerves II Cranial nerves III Spinal cord IV Brain

• I and Ii

• II and III

• III and IV

• I and IV

Stimulus -> x -> brain -> y -> Response

Identify x and y

• x: affector

  y: impulse

• x: effector

  y: impulse

• x: affector

  y: effector

• x: effector

  y: affector

1. Rearrange the sequence below correctly.

2. I Sends information in the form of impulses II Interpret impulses III Produces appropriate responses IV Detects stimuli

• IV -> I -> II -> III

• I -> IV -> II -> III

• III -> IV -> II -> I

• III -> II -> IV -> I

Which of the following is true of voluntary actions?

• Occurs under one's will

• Controlled by medulla oblongata

• Breathing is an example of voluntary action

Choose the correct match.

• Affector: muscle or glands

  Effector: Receptors in sensory organs (eyes, ears)

• Affector: Stimulus like sound or light

  Effector: Muscles

• Affector: Receptors in sensory organs (eyes, ears)

  Effector: muscles or glands

• Affector: Muscles

  Effector: Stimulus like sound or light