Communication between cells in a multicellular organism occurs by use of nerve impulses or hormones. The central nervous system produces electrical impulses for rapid response.
What are the components of the CNS?
Brain and spinal cord
Cerebrum, cerebellum and medulla
A sensory neuron, relay neuron and motor neuron
What detects a stimulus?
Which of the following correctly labels this diagram?
(1) medulla (2) cerebellum (3) cerebrum
(1) cerebellum (2) medulla (3) cerebrum
(1) cerebrum (2) cerebellum (3) medulla
Which of the following are functions of the cerebellum?
Control of heart rate and breathing rate
Control of movement and balance
Memory and intelligence
Which part of the brain controls the heart rate and the breathing rate?
Which of the options shows the order of neurons through which a nerve impulse travels in a reflex arc?
motor to inter to sensory
motor to sensory to inter
sensory to inter to motor
Which of the following describes the change in the quantity of glucagon and insulin released by the pancreas in response to an increase in blood glucose concentration above the set point?
Glucagon increases and insulin decreases
Glucagon decreases and insulin increases
Glucagon increases and insulin increases
Where are insulin and glucagon produced?
In the liver
In the pancreas
In the small intestine
Why are liver cells able to respond to the hormones insulin and glucagon?
The hormones are only sent to the liver cells
The hormones can attach to specific receptors on the liver cells
The hormones are produced by nearby cells in the liver
In which form is glucose stored in the liver?