Immune
What is the thick middle layer of the heart wall?
Myocardium Cardiovascular
What is another name for red blood cells?
Erythrocytes Blood
What is the outer layer of the heart called?
Epicardium Cardiovascular
What tube connects the throat to the stomach?
Esophagus Digestive
What is a blood vessel that carries blood away from the heart?
Artery Cardiovascular
What are adenoids and where are they located?
Adenoids are lymphatic tissue located in the nasopharynx; they help trap pathogens. Lymphatic, Immune
What structure lies between the lungs in the thoracic cavity?
Mediastinum Anatomy
What type of immune cell matures in the thymus?
T cell Immune
What organisms live in or on another organism and cause harm?
Parasites Pathology
What is the main artery that carries blood from the heart to the body?
Aorta Cardiovascular
What is the process of a cell engulfing particles?
Phagocytosis Immune
What is the function of thrombocytes?
Blood clottingBlood
What organ is vital for T cell development?
Thymus Immune
What is an antibody?
A protein made by B cells that binds to antigens to neutralize them.
What is a protein that binds to antigens to neutralize them?
Antibody Immune
What is a poisonous substance produced by living cells?
Toxin Pathology
What is a small branch of an artery called?
Arteriole Cardiovascular
What is the valve between the left atrium and left ventricle?
Bicuspid valve (mitral valve) Cardiovascular
What are disease-causing microorganisms called?
Pathogens Pathology
What immune cells destroy infected or cancerous cells?
Natural killer (NK) cellsImmune
What is an erythrocyte?
A red blood cell that carries oxygen.
What immune cell activates other immune cells?
Helper T cell Immune
What are disease-causing microorganisms called?
Pathogens Pathology
What organ pumps blood through the circulatory system?
Heart Cardiovascular
What is the study of the immune system?
Immunology Immune
What is the liquid portion of blood without cells?
Plasma Blood
What are tonsils and what do they do?
Lymphoid tissues in the pharynx that trap pathogens Immune
What are mononuclear leukocytes?
White blood cells with a single nucleus, like lymphocytes and monocytes.
What type of leukocytes have a single round nucleus?
Mononuclear leukocytes Immune
What hormone stimulates red blood cell production?
Erythropoietin Hormonal, Blood
What blood vessel carries blood back to the heart?
Vein Cardiovascular
What muscle helps in breathing and separates chest from abdomen?
Diaphragm Respiratory
What is blood plasma without clotting factors?
Serum Blood
What immune cell activates other immune cells?
Helper T cell Immune
What is the function of a thrombocyte?
To help with blood clotting.
What is a foreign substance that triggers an immune response?
Antigen Immune
What blood vessel carries blood back to the heart?
Vein Cardiovascular
What is the largest vein in the body?
Vena cava Cardiovascular
What are adenoids and what is their function?
ymphatic tissue in the nasopharynx that traps pathogens.
What T cell helps slow or stop immune response?
Suppressor T cell Immune
What is the process of injecting a weakened pathogen to produce immunity?
Vaccination Immune
What is an antigen?
A substance that triggers an immune response.
What is the process of injecting a weakened pathogen to produce immunity?
Vaccination Immune
What type of microorganism is a single-celled prokaryote?
Bacteria Pathology
What is the valve between the left atrium and left ventricle?
Bicuspid valve (mitral valve) Cardiovascular
What is the epicardium?
The outermost layer of the heart wall.
What is the inner lining of the heart called?
Endocardium Cardiovascular
What organ filters blood and helps fight infection?
Spleen Lymphatic
What is erythropoietin?
A hormone that stimulates red blood cell production in bone marrow.
What immune cell produces antibodies?
B cell Immune
What is another term for an antibody?
Immunoglobulin Immune
What is a small vein called?
Venule Cardiovascular
What is the mediastinum?
The central compartment of the thoracic cavity, between the lungs.
What is a large phagocytic cell that engulfs pathogens?
Macrophage Immune
What is the relaxation phase of the heartbeat called?
Diastole Cardiovascular
What is the myocardium?
The thick muscular middle layer of the heart wall.
What is the body's ability to resist disease?
Immunity Immune
What is another term for an antibody?
Immunoglobulin Immune
What term describes the pressure of blood in arteries?
Blood pressure Cardiovascular
What are T cells?
A type of lymphocyte involved in cell-mediated immunity.
What is the contraction phase of the heart called?
Systole Cardiovascular
What system returns fluid to the bloodstream and filters pathogens?
Lymphatic system Lymphatic
What is the role of a helper T cell?
To activate B cells and cytotoxic T cells during an immune response.