2.2 sense organs

Question 1

How do cells communicate with each other?

Answer 1

Using electrical impulses and chemicals such as neurotransmitters and hormones

This communication is essential for meeting cellular requirements.

Question 2

What is the role of the sensory system in relation to the tongue?

Answer 2

It sends information to the brain about taste

The tongue’s papillae contain taste buds that contribute to this sensory function.

Question 3

What is the response time?

Answer 3

The time it takes to respond to a detected event (stimulus)

This concept is crucial for understanding bodily reactions to danger.

Question 4

What hormone triggers the fight-or-flight response?

Answer 4

Adrenaline

The endocrine system releases adrenaline in response to perceived danger.

Question 5

Which body systems are involved in the fight-or-flight response?

Answer 5

Nervous system and endocrine system

These systems work together to prepare the body for immediate action.

Question 6

Fill in the blank: The __________ system detects danger using receptors in the eyes.

Answer 6

Nervous

The nervous system processes visual information to identify threats.

Question 7

How does low blood sugar affect your response to hunger?

Answer 7

It triggers a need to eat to restore blood sugar levels

This is a physiological response linked to energy levels.

Question 8

True or False: All reactions can be consciously controlled.

Answer 8

False

Many reactions, especially reflexes, occur automatically.

Question 9

What is the relationship between hormones and the menstrual cycle?

Answer 9

Hormones regulate the phases of the menstrual cycle

Key hormones include estrogen and progesterone.

Question 10

What are dependent and independent variables in a reaction time experiment?

Answer 10

• Dependent variable: Reaction time
• Independent variable: Stimulus type

Understanding these variables is crucial for experimental design.