Topic 4 - Body Coordination And Disease Flashcards
Metabolism
The chemical processes that occur within a living organism to maintain life
Catabolic reaction
Reactions that break down matter e.g. Cellular respiration
Anabolic reaction
Reactions that build complex molecules from simple substances e.g. The making of new cells
Diffusion
The movement of particles in a substance from an area of high concentrations to an area of low concentrations
Diffusion can occur in where?
Lipids and gases
Function of digestive system
The chemically change the complex molecules into simple molecules your body can use
Function of circulatory system
It carries material to and from every single cell in your body
Cardiac muscle
Involuntary muscle, meaning it works without you having to think about it
SA node
Stimulates both atria to contract simultaneously
AV node
Stimulates both ventricles to contract
Electrocardiogram
An image showing the heart beat
Organelle
Smaller structures found in cells
Central Nervous System (CNS)
Consists of the brain and spinal cord, and receives information from your body, processes it and tells your body how to respond
Cerebellum
The part of the brain responsible for coordination and balance
Cerebrospinal fluid (csf)
A fluid surrounding the brain and spinal cord which provides nutrients to neutrons and acts as a shock absorber
Cerebrum
Part of the brain responsible for your conscious thoughts and movements of every body part
Endocrine glands
Glands that produce hormones
Mitochondria
Organelle where cellular respiration occurs
Motor neuron
Nerve cells that carry messages from the CNS to effectors
Neuron
A nerve cell
Neurotransmitter
A chemical message released at the end of an axon to be received by the next neurone dendrites
Peripheral Nervous System (PNS)
The nerves that carry messages to and from the central nervous system and other parts of the body
Reflex arc
The nerve pathway operating in a reflex action
Ribosomes
The structure where proteins are made
