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Ch. 4 Body Systems Answer Key

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Lesson 1
#1 The endocrine system function controls internal conditions, growth, development, and reproduction
#2 Nervous system function controls body movement, thought and behavior
#3 respiratory system function provides the body with oxygen and removes gas wastes from the body
#4 excretory system function removes wastes from blood
#5 skeletal system function provides the body protection and support; interacts with muscles to allow movement
lesson 2
#1 Bones are made of what living tissues and nonliving materials deposited by bone cells
#2 What makes up the skeletal system bones and cartillage
#3 What are the 3 types of muscles cardiac, smooth, skeletal
#4
#5 How do muscles and bones work together to move you the muscles attach on either end of the bone. one muscle contracts pulling the bone up. the other muscle relaxes. movement results in the direction of the pulling muscle
lesson 3
#1 What is a neuron nerve cells that pass messages
#2 what is an impulse message sent by neuron
#3 How do messages get sent the neuron has a cell body with short branches attached. the message enters the dendrite, passes through the cell body and exits to the next neuron through the axon
#4 what is a biofeedback loop a circular pathway that sends information back and forth throughout the body
#5 what is the endocrine gland an organ that releases chemical substances directly into the blood
Lesson 5
#1 what is a pathogen organisms such as bacteria, viruses, and fungi that cause disease
#2 what is an antibody chemicals that kill specific pathogens
#3 what is the difference between the 2 types of white blood cells one type will attack any pathogen entering the body, the other targets specific pathogens
#4
#5
Lesson 4
#1 what makes up the circulatory system blood, heart, blood vessels
#2 what happens in the alveoli oxygen enters the blood and carbon dioxide is removed
#3 what makes up the respiratory system lungs, nose, trachea, and bronchial tubes
#4 what is an enzyme chemicals that help break down food into nutrients
#5 what is the process of digestion mouth, esophagus, stomach, small intestine, large intestine
Final Question