The central and peripheral nervous system

The central and peripheral nervous system

3.4 The central nervous system receives information from the peripheral nervous system (page 50-51)

The Central Nervous System (CNS)

Is the control centre of the body.

All incoming messages and your responses to them are processed through your CNS.

The Brain

• The processing centre of the body - mainly concerned with survival.

• Your brain is a soft heavy organ, protected by a tough skull.

• The brain is home to your memories, personality and thought process.

Lobes of the brain

The cerebrum or outer section of your brain is divided into four lobes or sections which have specific functions.

The frontal Lobe

• Located at the front of the brain.

• Functions include emotions, reasoning, movement and problem solving.

The Parietal Lobe

• Manages the perception of senses.

• Including taste, pain, pressure, temperature and touch.

The Temporal Lobe

• Located in the region near your ears.

• Deals with the recognition of sounds and smells.

The Occipital Lobe

• Located at the very back of the brain.

• It is responsible for various aspects of vision.

Multiple Choice

What lobe is pink in this picture?

• Frontal

• Parietal

• Temporal

• Occipital

Multiple Choice

What lobe is green in this picture?

• Frontal

• Parietal

• Temporal

• Occipital

Multiple Choice

What lobe is purple in this picture?

• Frontal

• Parietal

• Temporal

• Occipital

Multiple Choice

What lobe is blue in this picture?

• Frontal

• Parietal

• Temporal

• Occipital

Multiple Choice

Which lobe is responsible for hearing?

• Frontal

• Parietal

• Temporal

• Occipital

Multiple Choice

What does your occipital lobe do?

• Processes your hearing

• Processes your vision

• Contains your personality

• Processes your sense of touch

Multiple Choice

What does the parietal lobe do?

• Processes your hearing

• Processes your vision

• Contains your personality

• Processes your sense of touch

Multiple Choice

What does the frontal lobe do?

• Processes your hearing

• Processes your vision

• Contains your personality

• Processes your sense of touch

The Peripheral Nervous System

The PNS is made up of all nerves outside of the CNS.

The PNS carries information to and from the CNS to the rest of the body, such as limbs and organs

The PNS is divided into two parts.

The somatic and automatic nervous system

The Somatic Nervous System

• Controls voluntary skeletal muscle movements.

• Eg. waving or reaching out to take an object

The Autonomic nervous system

• Controls involuntary actions - happen without conscious control.

• Examples include: heartbeat, digestion, respiration, salivation and perspiration.

• This system maintains your body's internal environment (homeostasis).

The Autonomic nervous system has two parts.

The sympathetic and parasympathetic division - which work together to maintain balance in the body.

Sympathetic

• Prepares you for action!

• eg. speeds up your heart rate

Parasympathetic

• Calms you down

• eg. slows down the heart rate.

Multiple Choice

The slowing of your heartbeat is part of the

• sympathetic division

• parasympathetic division

Multiple Choice

increased heart rate is part of the

• sympathetic division

• parasympathetic division

Multiple Choice

The _____part of the autonomic nervous system is active during resting.

• sympathetic
• parasympathetic
• somatic
• peripheral

Multiple Choice

The Peripheral Nervous System is divided into the Somatic System and the Autonomic System

• True

• False

Multiple Select

The Autonomic part of the Peripheral Nervous System is split into two parts, select them

• Central Nervous System

• Sympathetic

• Parasypathetic

• Somatic

Multiple Choice

What does the somatic system do? (the somatic system is part of the Peripheral Nervous System)

• It speeds up functions of the body ready for fight or flight

• it slows down functions of the body ready for rest and digest

• It consists of all the neurons outside of the Central Nervous System

• It is used for actions that you control (reaching out and grabbing something) and sensing stimuli

Multiple Choice

You see a friend and wave, which part of you PNS is causing this?

• Somatic

• Autonomic

• Sympathetic

• Parasympathetic

Multiple Choice

Alexa is presenting a project in front of her class. She starts sweating and her heart rate increases. This is an example of the autonomic nervous system, sympathetic division.

• True

• False

Multiple Choice

Which one coordinates the inner organs?

• somatic nervous system

• autonomic nervous system