Want to create interactive content? It’s easy in Genially!
Coordination and response - IGCSE Biology
María Belén Cerliani
Created on August 13, 2023
Start designing with a free template
Discover more than 1500 professional designs like these:
View
Audio tutorial
View
Pechakucha Presentation
View
Desktop Workspace
View
Decades Presentation
View
Psychology Presentation
View
Medical Dna Presentation
View
Geometric Project Presentation
Transcript
COORDINATION AND RESPONSE
CHAPTERS 13 & 14
START
Coordination and response
Sense organs
Hormones
Homeostasis
Tropic responses
Structure & Role of the Mammalian Nervous System
The human nervous system consists of the: - central nervous system (CNS) - the brain and the spinal cord - peripheral nervous system (PNS) - all of the nerves in the body It allows us to: - Make sense of our surroundings and respond to them - Coordinate and regulate body functions
Types of neurones
Structure & Role of the Mammalian Nervous System
Information is sent through the nervous system as nerve impulses - electrical signals that pass along nerve cells known as neurones A bundle of neurones is known as a nerve
The Reflex Arc
The Reflex Arc
Synapse: a junction between two neurones
The synapse (extended)
The synapse (extended)
The synapse (extended)
Sense organs
- Receptors are groups of specialised cells.
- They detect a change in the environment and stimulate electrical impulses in response.
- Sense organs contain groups of receptors that respond to specific stimuli: light, sound, touch, temperature and chemicals.
The eye
The eye
Hormones
Play
Homeostasis
The maintenance of a constant internal environment. 1) Controlling blood glucose concentration 2) Controlling body temperature
Tropic responses
Gravitropism: a response in which parts of a plant grow towards or away from gravity. Phototropism: a response in which parts of a plant grow towards or away from the direction of the light source.