Biology: ERI Test Flashcards
Hormone
Substance produced in one part of an organism that affects another part of the same organism
Target Cell
Cell that has a receptor for a particular hormone
Exocrine Gland
Gland that releases its secretions through tubelike structures called ducts
Endocrine Gland
Gland that releases its secretions directly into the bloodstream
Prostaglandin
Hormonelike fatty acid that only affects nearby cells
Puberty
Period of rapid growth and sexual maturation in which the reproductive system becomes fully functional
Menstrual Cycle
Cycle during which eggs develop, are released, and the uterus is prepared to receive a fertilized egg
Zygote
Fertilized egg
Implantation
When a blastocyst attaches to the uterus wall
Differentiation
Specialization of cell’s structure and function
Placenta
Organ through which nutrients, oxygen, carbon-dioxide, and wastes are exchanged between embyro and mother
Disease
Any change, other than injury, that disrupts the normal functions of the body
Vector
Animal that carries pathogens from person to person
Immunity
Ability of the body to resist a specific pathogen
Fever
Elevated body temperature that occurs in response to infection
Inflammatory Response
Nonspecific defense reaction to tissue damage caused by injury or infection
Immune Response
The body’s specific defenses that attack a disease causing agent
Antigen
A substance that causes an immune response
Antibody
A protein that helps destroy pathogens
Vaccination
Injection of a weakened or mild form of a pathogen to produce immunity
Active Immunity
Immunity produced by exposure to an antigen, as a result of the immune reponse
Passive Immunity
Short-term immunity caused when antibodies produced by other animals for a pathogen are injected into the body
Allergy
Overreaction of the immune system to antigens
Histamine
Chemical that increases the flow of blood and fluids to the surrounding area