Which of the following is TRUE of core body temperature? (There may be more than one answer. Please select all correct answers.)Group of answer choicesIt shows a 24-hour cycleIt is lowest during sleepIt is the temperature of the vital organsIt changes by less than 1 degree Celsius over the course of the day

All of the statements are true of core body temperature:

1. It shows a 24-hour cycle: This is known as the circadian rhythm, which affects various physiological processes, including body temperature.

2. It is lowest during sleep: During the night, when we sleep, our metabolic activities decrease, which results in a lower body temperature.

3. It is the temperature of the vital organs: Core body temperature specifically refers to the temperature of the vital organs, like the heart, liver, and brain, which is maintained at a steady level.

4. It changes by less than 1 degree Celsius over the course of the day: Despite external environmental conditions, the body maintains its core temperature within a narrow range, typically changing less than 1 degree Celsius throughout the day.

All of the statements are true about core body temperature:

1. It shows a 24-hour cycle: This is known as circadian rhythm. Our body temperature naturally fluctuates over a 24-hour period (day and night), with the highest temperatures occurring in the late afternoon and the lowest in the early morning.

2. It is lowest during sleep: As part of the circadian rhythm, our body temperature drops when we sleep to conserve energy.

3. It is the temperature of the vital organs: Core body temperature refers to the temperature of the internal environment of the body, which includes vital organs like the heart, lungs, and brain.

4. It changes by less than 1 degree Celsius over the course of the day: While our body temperature does fluctuate over the course of the day, these changes are usually very small, often less than 1 degree Celsius.