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Ch 27-33 Body systems final
CHS9 Chugh
21
Biology
9th Grade
05/24/2013

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Term
What are the levels of organization in the body, from simplest to most complex?
Definition
cell, tissue, organ, organ system, organism
Term
What are the functions of the skin?
Definition
Physical barrier against dirt, organisms, etc.
Retains body heat
Protects internal organs
Regulates moisture
Term
What are the functions of the skeletal system?
Definition
Provides body support
Protects certain organs (brain & lungs)
Works with muscular system in body movements
Term
Where are red blood cells formed?
Definition
Red bone marrow
Term
What are the 3 functions of the nervous system?
Definition
Sensory input
Integration (connecting information from different senses & planning response)
Motor output
Term
What is the smallest structural unit of the nervous system?
Definition
Neuron
Term
What is released from the end of a neuron and why is this important?
Definition
electrical pulse in the form of an ion
Term
Draw a neuron and label its parts.
Definition
[image]
Term
What are the main parts of the nervous system?
Definition
Central Nervous System: Brain & Spinal Cord
Peripheral Nervous System: Sensory Neurons
Term
Function of the Brain
Definition
Receives, sorts, and delivers vast quantities of information.
Term
Function of the Spinal Cord
Definition
Processes certain types of sensory information and sends out responses via motor neurons.
Term
Function of Sensory Neurons
Definition
Detect and carry information about stimuli to the CNS, sense pain, etc.
Term
What part of the digestive system absorbs any water that is left after digestion?
Definition
Large intestine
Term
Where does chemical digestion begin in the body?
Definition
In the mouth, with saliva.
Term
What are the monomers that make up proteins?
Definition
Amino acids
Term
What are the monomers that make up fats?
Definition
Fatty acids
Term
What are the monomers that make up carbohydrates?
Definition
Monosaccharides: glucose, sucrose, fructose, galactose, lactose, maltose
Term
What are the functions of blood?
Definition
Supplies cells with oxygen & nutrients (from food)
Carries away carbon dioxide
Brings white blood cells to fight infection & cancer
Term
What is the difference between arteries, capillaries and veins? Order them from smallest to largest.
Definition
Capillaries have thin walls; distribute nutrients & oxygen; connected to all cells in the body
Arteries have thick walls; contract to make sure blood only flows from heart to capillaries,
Veins return blood from capillaries to heart for oxygenation
Capillaries, Veins, Arteries
Term
Which type of blood cell carries hemoglobin?
Definition
Red
Term
Define non-specific defense and give 3 examples.
Definition
Doesn't single out a specific pathogen.
White blood cells, inflammatory response, certain specialized proteins like interferon.
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