Download Nervous system

26.04.2017
Nervous System
Learning Objective: How does my nervous system allow me
to detect and respond to my environment?
Success Criteria:

Explain the difference between the Central Nervous
System and Peripheral Nervous System

Understand the structure and function of the different
neurons in the nervous system

Explain how signals are transmitted through the nervous
system

Create annotated models to convey scientific concepts
Nervous System Introduction

https://www.youtube.com/watch?v=x8DjPqdlUbg

https://www.youtube.com/watch?v=qPix_X-9t7E
As you are watching these videos, take notes about the
important information
Include:

The structure of the nervous system

The type of cells and their function

The CNS and the PNS and the difference between them
Nervous system
The nervous system is composed of:
 the central nervous system
(brain and spinal cord) and
 the peripheral nervous system
(the nerves that connect the
central nervous system to the
rest of the body).
Nervous system
Messages are taken to the central
nervous system by sensory
neurons and taken away from it
by motor neurons.
The nervous system sends
messages as electrical impulses
along a neuron and then as a
chemical messages
(neurotransmitters) across the
gaps (synapses) between them.
Neurons

A neuron (or nerve cell) is an electrically excitable cell
that processes and transmits information through
electrical signals across gaps called synapses.

Neurons can connect to each other to form neural
networks.
Neurons

Neurons are the core components of the brain and
spinal cord of the central nervous system, and the
peripheral nervous system.
Neurons

Specialized types of neurons include: sensory
neurons which respond to sensory stimuli and then
send signals to the spinal cord and brain; motor
neurons that receive signals from the brain and
spinal cord to cause muscle contractions; and
interneurons which connect neurons to other
neurons.
Your Task
26.04.2017
The Brain

Learning Objective: What are the different sections of
the brain responsible for?
Success Criteria:

Identify the different components of the brain

Successfully complete a brain dissection

Understand which functions the different parts of the
brain are responsible for
The different parts of the
brain

https://www.youtube.com/watch?v=0-8PvNOdByc

https://www.youtube.com/watch?v=vHrmiy4W9C0
Complete the practical 7.2 on
Page 290 of textbook
Brain dissection Reflection

For your results table from the Brain dissection, make
sure to add a column.

For each of the different parts of the brain, summarise
their main functions.
Function
Control Centre of the Nervous
System- The brain

What are
the
functions of
the
different
parts of the
brain?
Body Systems
Frontal lobe

The frontal lobes are part of the Cerebral Cortex and are
the largest of the brain's structures.

They are the main site of so–called 'higher' Cognitive
functions – involved in attention and thought, voluntary
movement, decision–making, planning, problem–solving,
thinking, voluntary motor control, cognition, intelligence,
attention, language processing and comprehension, and
many others..
Parietal lobe

The parietal cortex plays an important role in integrating
information from different senses to build a coherent
picture of the world. It processes what things are and
where things are. This allows us to coordinate our
movements in response to the objects in our
environment.

The parietal cortex processes attentional awareness of
the environment, is involved in manipulating objects, and
representing numbers.
Occipital lobe

The occipital cortex is the primary visual
area of the brain. It receives projections
from the retina from where different
groups of neurons separately encode
different visual information such as color,
orientation, and motion.
Body Systems
Temporal lobe

The temporal lobes contain a large
number of substructures, whose
functions include perception, face
recognition, object recognition, memory
acquisition, understanding language,
and emotional reactions.
Cerebellum

The cerebellum monitors and regulates motor behavior,
particularly automatic movements.

Associated functions: coordination of voluntary
movement, motor–learning, balance, reflex memory,
posture, timing, sequence learning.
Brain Stem

The brain stem plays an important role in maintaining
homeostasis by controlling functions such as breathing, heart
rate, digestion, perspiration, temperature and blood pressure.

The brain stem can organize motor movements such as reflexes,
it coordinates fine movements of limbs and the face, balance,
alertness and has a sleep function.
Sides of the Brain

The right side is responsible for artistic and musical
ability, intuition and perception. The left takes care of
language, learning mathematics and logical thinking.