Studied by 0 people
Looks like no one added any tags here yet for you.
What is the primary function of the Nervous System?
To detect and respond to changes in the environment (stimuli) to maintain homeostasis.
What are the key components of the Central Nervous System (CNS)?
The brain and spinal cord.
Fill in the Blank: Sensory Neurons carry impulses from __________ to the CNS.
receptors
What is the function of Motor Neurons?
To carry impulses from the CNS to effectors (muscles or glands).
What is a Reflex Arc?
A quick, automatic response to a stimulus.
Fill in the Blank: The sequence of a Reflex Arc is Stimulus → Receptor → Sensory Neuron → __________ → Motor Neuron → Effector → Response.
Relay Neuron
What does the hormonal system use to communicate?
Chemical messengers (hormones) transported in the blood.
Vocabulary: Insulin
A hormone produced by the pancreas that reduces blood glucose levels.
What does Adrenaline prepare the body for?
'Fight or flight' response.
Fill in the Blank: The __________ is responsible for controlling the size of the pupil and light entry.
Iris
What is the function of the Retina?
Contains light-sensitive cells (rods and cones).
Vocabulary: Phototropism
Growth towards light (in shoots).
What role do Auxins play in plants?
Regulate growth by promoting or inhibiting cell elongation.
Fill in the Blank: The process of maintaining a constant internal environment is known as __________.
Homeostasis
What happens in the body during Vasodilation?
Blood vessels widen to increase heat loss.
What is the role of ADH (Antidiuretic Hormone)?
Regulates water reabsorption in the kidneys.
