A LEVEL CONTROL AND COORDINATION

Just before a person starts to exhale, the composition of the air in an alveolus differs from the composition of the air in the trachea. How would the composition differ? (tick all that apply)

• less oxygen

• more oxygen

• more carbon dioxide

• more water vapour

• less water vapour

Which of the following statements are true about negative feedback?

• Most processes in the body are controlled by negative feedback.

• Negative in this case means the opposite direction of the stimulus.

• Negative in this case means something bad or problematic.

• Goal is to return immediately to homeostasis.

• Amplifies the change.

The I band is labeled here as _______.

• AD

• AC

• BC

• AB

What number(s) on the graph represents the Resting Potential?

• 1 and 2
• 1 and 5
• 2 and 3
• 3 and 4

What is the eye an example of?

• a stimulus

• a sense organ

• a relay neuron

What is the purpose of the nervous system?

• Control and communication of and between systems of the body.

• To let you know when you when you should feel anxious about something.

How are hormones transported through the body?

• Through the lymphatic system

• Through the bloodstream

• Through nerves

• Through cell-to-cell contact

a body system that controls growth and homeostasis by secreting hormones from glands.

• skeletal system
• nervous system
• endocrine sytem
• integumentary system

This is made up of the brain and spinal cord

• Central Nervous System (CNS)

• Peripheral Nervous System (PNS)

• Autonomic nervous system

• Somatic nervous system

a signal molecule that transmits nerve impulses across synapses

• neuron
• neurotransmitter
• nerve
• action potential