Coordination in Animals

Coordination in Animals

9 September 2020

Poll

Which one are you?

• Left-handed

• Right-handed

• Ambidextrous

Today, you will:

• describe a nerve impulse as an electrical signal that passes along nerve cells called neurones; and

• describe the human nervous system in terms of : the CNS consisting of the brain and spinal cord; the PNS; and the coordination and regulation of body functions.

Activity 1

Goal: to label the parts of our nervous system and a neurone

                    OPTIONS

• brain

• spinal cord

• ganglion                                  nerve ending

• nerves                                     myelin sheath

• cell membrane                      node of Ranvier

• cytoplasm                              dendrite

• cell body (soma)                   axon

Coordination in Animals

The Concept

Multiple Choice

Changes in the organism's environment are called ______.

• stimuli

• receptors

• effectors

Multiple Choice

Stimuli are sensed by specialised cells called _____.

• stimulus

• receptors

• effectors

Multiple Choice

Muscles may respond to stimuli by contraction. What type of organ are muscles in this case?

• stimulus

• receptor

• effector

Multiple Choice

Salivary glands start to produce saliva when you smell a delicious food. What causes this to happen?

• receptor

• stimulus

• effector

Multiple Choice

The way in which receptors pick up stimuli, and then pass information on to effectors, is called ______.

• communication

• coordination

The Human Nervous System

Parts and Functions

How are the two subsystems connected?

Study the figure.

The Neurone or Nerve Cell

Parts and Functions

Are there any types of neurones?

Study the figure.

Activity 5.2

Goal: to solve the puzzle about the parts and functions of the neurone and the nervous system

Activity 5.3 REACTION TIME

Goal: to measure my reaction time

How does the CNS coordinate the messages (nerve impulses) traveling through the nervous system?

Open Ended

Explain how the receptor, brain or spinal cord, and effector coordinate to relay the electrical signals/ message.

What is a reflex reaction/action?

Watch a video in Google Classroom.

Multiple Choice

The PATHWAY along which the nerve impulse passes - the sensory neurone, relay neurones, and motor neurone - is called a ____.

• reflex action

• reflex arc

Activity 5.4 Sequencing

Goal: to measure my reaction time