Chapter 18 Lesson 1 Vocabulary Page: 478-482 Pathogens- Disease-causing organisms that are so small they can only be seen through a microscope. Infections- A condition that occurs when pathogens enter the body, multiply, and cause harm. Viruses-
Tuberculosis
A bacterial disease that usually affects the lungs.
Skeletal system
A body system made up of bones, joints, and connective tissue.
Immune System
A combination of body defenses made up of the cells, tissue and organs that fight off pathogens and diseases.
Infections
A condition that occurs when pathogens enter the body, multiply, and cause harm.
Vaccine
A preparation of dead or weakened pathogens that causes the immune system to produce
Vaccine
A preparation of dead or weakened pathogens that causes the immune system to produce antibodies.
Lymphatic System
A secondary circulatory system that helps the body fight pathogens and maintains its fluid balance.
Pneumonia
A serious inflammation of the lungs
Marrow
A soft tissue in the center of some bones
Strep Throat
A sore throat caused by streptococcal bacteria.
Cartilage
A strong flexible, gel-like tissue that cushions your joints.
Mononucleosis
A viral disease characterized by a severe sore throat and swelling of the lymph glands in the neck and around the throat area.
Hepatitis
A viral disease of the liver characterized by yellowing of the skin and the whites of the eyes.
ball & socket joints
Allow bones to move in all directions
hinge joints
Allow movement in one direction.
pivot joints
Allow movement with limited rotation
Vector
An organism, such as an insect that transmits pathogens
Antigens
Any substance released by invading pathogens
Hygiene
Cleanliness.
Ligament
Cordlike tissues that connect the bones in each joint.
Pathogens
Disease-causing organisms that are so small they can only be seen through a microscope.
gliding joints
Help bones slide over one another without twisting
Protozoa
One-celled organisms that are mor4e complex than bacteria
Fungi
Organisms that are more complex than bacteria but can't make there own food.
Antibodies
Proteins that attach to antigens, keeping them from harming the body
Inflammation
The body's response to injury or disease, resulting ins a condition of swelling, pain,heat, and redness.
Contagious Period
The length of time that a particular disease can be spread from person to person.
Joints
The point at which two bones meet
Viruses
The smallest pathogens
Lymphocytes
The white blood cells in the lymphatic system
Bacteria
Tiny one-celled organisms
Tendons
Tough bands of tissue that attach your muscles to bones
Immunity
Your body's ability to resist the germs that cause particular disease.
