Body Systems
what organs are part of the nervous system?
brain and spinal cord
How are hormones transported through the body?
Through the blood stream.
What is a name for a disease-causing organism?
Pathogen.
How many lines of defence are there?
Three.
Percentage = (83/532) x 100 = 15.6%
What are the three types of neurons
sensory, motor, interneuron
a very fast response to a stimulus. This type of action does not require the brain.
What is reflex action
What are four different types of pathogens?
Bacteria, Virus, Protist and Fungi.
Nasal hairs, mucus, skin and stomach acid are examples from which of the lines of defence?
First.
3 main parts of the brain
what is cerebrum, brainstem and cerebellum
The speed of the message sent by the Nervous System is fast. What is the speed of the response by the body?
Immediate.
What two hormones are produced by the pancreas?
Insulin and Glucagon.
three categories of non-infectious disease
what is environmental, inherited, nutritional
White blood cells called lymphocytes create ___________ which bind to pathogens and help destroy them.
Antibodies.
Which direction does the impulse signal move? from where to where
What is dendrites to axon
Which gland produces adrenaline?
Adrenal Gland.
This gland located in the brain produces Growth Hormone.
Pituitary Gland.
What disease is defined by chronically high blood sugar levels?
Diabetes.
What do all pathogens possess that marks them as "foreign" to the body?
Antigen.
What is the mode of transmission of malaria?
Mosquito bite.
What three things do white blood cells do?
Create antibodies.
Destroy pathogens by engulfing them.
Remember previous pathogens for quick production of antibodies.
What three things do platelets do after you have cut yourself?
Clot the blood so you don't continue bleeding.
Form a scab to seal off exposed tissue.
Reseal the skin to prevent more pathogens getting in.
Explain how vaccinations can help in preventing people from getting sick.
Vaccinations are dead or weakened parts of a pathogen. The body produces antibodies to this pathogen before the actual pathogen can invade the body. If the pathogen does invade the body, antibodies are quickly made to fight off the pathogen.
two main types of lymphocytes
B-cells and T-cells
function of brainstem and give an example
what is unconscious activities
e.g. heart rate