Question

cloze passage (student version) directions: fill in the blanks using the word bank. sleep is divided into several stages. in _, we first enter light sleep where _ waves shift into _ waves, and we may feel like we are falling. in _, bursts of brain activity called _ occur, and body temperature and heart rate slow. in _, also called deep sleep, _ waves dominate, and this stage is important for physical repair and growth. finally, in _, the brain becomes very active, dreams occur, and the body enters a state of _ to prevent us from acting out dreams. the entire sleep cycle repeats every _ minutes. word bank: alpha, theta, nrem - 1, nrem - 2, nrem - 3, rem sleep, delta, spindles, paralysis, 90. multiple - choice questions (student worksheet) name: date: directions: circle the best answer for each question. 1. which brain waves are present during light sleep in nrem - 1? a) delta b) alpha → theta c) beta d) spindles 2. sleep spindles are characteristic of which sleep stage? a) rem b) nrem - 2 c) nrem - 3 d) nrem - 1 3. during which stage does physical paralysis occur? a) nrem - 1 b) nrem - 3 c) rem d) nrem - 2 4. which stage is most important for physical restoration and growth? a) rem b) nrem - 2 c) nrem - 3 d) nrem - 1 5. circadian rhythms regulate: a) dreams only b) 24 - hour body cycles

Explanation:

1. During NREM - 1, alpha waves shift into theta waves.
2. Sleep spindles are characteristic of NREM - 2.
3. Physical paralysis occurs during REM sleep.
4. NREM - 3 is important for physical restoration and growth.
5. Circadian rhythms regulate 24 - hour body cycles.

Answer:

1. d) Spindles
2. b) NREM - 2
3. c) REM
4. c) NREM - 3
5. b) 24 - hour body cycles