The brain and spinal cord make up the __________.

Permanently damaged areas in the hard surface of your teeth that develop into tiny openings or holes; caused by a combination of factors, including bacteria in your mouth, frequent snacking, sipping sugary drinks, and not cleaning your teeth well.

An infection of the genital tract occuring any time between the rupture of the membrane (labor) and 42 days postpartum; symptoms include swelling of the belly/abdomen, chills, pain while urinating or during sex, abnormal vaginal discharge that has a foul smell or blood in it.

A life-threatening condition cause by a severe localized or system-wide infection that requires immediate attention; blood pressure drops to a dangerously low level and can begin to cause organ failure; symptoms also include paleness, chills, difficulty breathing, decreased urine output, mental confusion, and disorientation.

What type of glial cells form the choroid plexus and produce cerebrospinal fluid?

A serious condition where a loss of blood supply causes body tissue to die; can affect any part of the body but typically starts in the toes, feet, fingers, and hands; symptoms include discolored skin, severe pain followed by numbness, and foul discharge.

A sexually- transmitted disease that can cause serious health problems without treatment; infection develops in stages (1o, 2o, 3o); initial symptoms include a painless sore on the genitals, mouth, or rectum; can be treated with antibiotics; secondary stage may include swollen lymph nodes, fatigue, muscle aches, and sore throat.

Spread to people through contact with infected body lice; caused when the feces from this arthropod is scratched into the skin; causes prolonged high fever, body and muscle aches, nausea, vomiting, stupor and confusion, and rash.

Caused by the bite of an infected flea; enters at the bite and travels through the lymphatic system to the nearest lymph node where it replicates itself; the lymph node becomes inflamed, painful; caused by the bacteria Yersinia pestis.

One difference between plant and animal cells is that animal cells do not have