Importance of Sleep

What type of brain waves are present in Stage 3 sleep?

• Alpha waves

• Beta waves

• Delta waves

• Theta waves

What happens to the immune system during Stage 3 sleep?

• It weakens

• It strengthens

• It remains unchanged

• It becomes overactive

Which of the following repairs and regenerates during Stage 3 sleep?

• Skin

• Muscles, tissues, and bones

• Hair

• Eyes

What does the EEG look like during Stage 4 of sleep?

• Awake cycle

• Deep sleep cycle

• Light sleep cycle

• No activity

How is the client's breathing described during Stage 4 of sleep?

• Regular and slow

• Irregular and erratic

• Deep and steady

• Shallow and rapid

What typically happens to the heart rate during Stage 4 of sleep?

• It decreases significantly

• It remains constant

• It may be elevated

• It stops temporarily

How long does the initial cycle of Stage 4 last?

• 5 minutes

• 10 minutes

• 20 minutes

• 30 minutes

Which stage of sleep is associated with the delta wave?

• Stage 1

• Stage 2

• Stage 3

• Stage 4

What is the percentage of total sleeping time spent in Stage 3?

• 5%

• 15%

• 50%

• 20-25%

What is the main characteristic of Stage 2 sleep?

• REM sleep

• Non-REM sleep

• Increased brain activity

• Muscle tension