Control And Communication Flashcards
Nervous system is made up of
Central nervous system (CNS), brain and spinal cord
Other (peripheral) neurons
Sensory neuron, inter neuron and motor neuron
The brain has
Overall control of the body
Medulla
Controls heart rate and breathing rate
Cerebellum
Controls balance and coordinated movement
Cerebrum
Responsible for conscious thoughts, reasoning, memory and emotions
What does the brain receive information from
Receptors
What does the brain send signals to
Effectors
Sensory neuron
Transmits an electrical impulse from receptors in sensory organs to the inter neuron in the CNS
Inter neuron
Transmits an electrical impulse through the CNS from a sensory neuron to a motor neuron
Motor neuron
Transmits an electrical impulse from the CNS to the effectors
What is the gap between the end of one neuron and the start of the next neuron called
Synapse
What is a reflex action
Rapid, automatic, involuntary response to a stimulus. Protects the body from harm. Brain is not involved
What is a reflex arc
Pathway that occurs when a stimulus causes the transimision of impulses through the sensory, inter and motor neuron to an effector to cause a reflex action
What are hormones
Chemical messengers, released directly into the bloodstream by endocrine glands. Stimulate target tissues which have specific protein receptors, complementary to specific hormones
Insulin
Cells in the pancreas detect the level of glucose in the blood. Insulin will convert excess glucose into glycogen and store it in the liver
Glucagon
Cells in the pancreas detect the level of glucose in the blood. Glucagon will break down glycogen in the liver into glucose
Words to describe a reflex response
Rapid, automatic, involuntary
Purpose of a reflex response in an animal
To stop the animal from harm
WhT type of gland releases hormones into the bloodstream
Endocrine glands
Insulin and glucagon are hormones. Describe two features of hormones
Chemical messengers.
Stimulate target tissues which have specific protein receptors
