9sci nervous system 2024

What is homeostasis?

• The process by which a living organism adapts to its external environment.

• The process by which a living organism maintains stable internal conditions despite varying external or internal influences.

• The process by which a living organism reproduces.

• The process by which a living organism consumes nutrients.

What is the correct sequence in the stimulus-response model when the body is exposed to heat?

• Stimulus > control centre > receptor > effector > response

• Stimulus > receptor > control centre > effector > response

• Stimulus > effector > receptor > control centre > response

• Receptor > stimulus > control centre > effector > response

Which part of the body acts as the receptor in the stimulus-response model to heat?

• Brain

• Sweat glands

• Thermoreceptor

• Muscles

What is the role of the effector in the stimulus-response model described for heat exposure?

• To perceive the heat

• To cool the body through sweating

• To send signals to the brain

• To increase body temperature

How does the body's response to heat help in reducing the body temperature?

• By increasing heat production

• By reducing sweat production

• By evaporation of sweat

• By trapping more heat

What is the formula for kinetic energy (KE)?

• KE = (m + v^2)/2

• KE = m(v^2)

• KE = (mv^2)/2

• KE = 2(mv^2)

What are the two main parts of the nervous system?

• Brain and Heart

• Central Nervous System and Peripheral Nervous System

• Central Nervous System and Somatic Nervous System

• Peripheral Nervous System and Autonomic Nervous System

What does the peripheral nervous system do according to the image?

• Controls voluntary movements

• Connects the central nervous system to the rest of the body

• Protects the brain and spinal cord

• Regulates the heart rate

Identify the part of the neuron where the signal starts

• Cell body

• Dendrite

• Axon

• Nucleus

Identify the part of the neuron where the ends and where neurotransmitters are released

• Cell body

• Dendrite

• Axon terminals

• Nucleus