Chapter 13: Coordination and Response: I The nervous System in Mammals

neuronsHuman Brain

Synapse is the junction b /w two ________:

Define sensitivity.

It is the "ability to respond" to a "stimulus".

What are the main parts of Central Nervous System (CNS)?

Main parts of CNS are; "brain" and "spinal cord".

What are the main parts of Peripheral Nervous System (PNS)?

Main parts of PNS are; "cranial nerves", "spinal nerves" from spinal cord and sense organs.

What is the role of sensory neuron(s)?

The role of sensory neuron(s) is to "transmit nerve impulses from sense organs to CNS".

What is the role of relay neuron(s)?

The role of relay neuron is to "transmit nerve impulses from sensory neurons to motor neuron".

What is the role of motor neuron(s)?

The role of motor neuron is to "transmit nerve impulses from CNS to the effector".

What is the role of cerebrum in brain?

Cerebrum in brain is concerned with "intelligence", "memory", "learning" and "overall control of voluntary action".

What is the role of hypothalamus in brain?

Hypothalamus in brain is concerned with "body temperature" and "blood osmotic pressure", "appetite", "sleep" and "emotions".

What is the role of midbrain in brain?

Midbrain in brain is concerned with "visual reflexes".

What is the role of cerebellum in brain?

Cerebellum in brain is concerned with "muscular coordination" and "maintaining body balance".

What is the role of medulla in brain?

Medulla in brain is concerned with "involuntary actions".

What is meant by reflex action?

It means an "immediate response" to a specific stimulus "without conscious control".

What is meant by conditioned reflex?

It means a "reflex action" acquired from "past experience or learning" with a "stimulus which is originally ineffective in producing the response".