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A&P Ass3 Terms
Penn Foster Intro to A&P Assignment 3 Terms
| Term | Definition |
|---|---|
| Adult hemoglobin | the primary type of hemoglobin found in RBCs of animals beginning a couple of weeks to a couple of months after birth |
| agranulocytes | WBCs w/o cytoplasmic granules |
| air sacs | "9 thin, transparent membranes in birds that are connected to the primary & secondary bronchi & act as reservoirs for entering & leaving the lungs" |
| alveolar ducts | the smallest air passageways in the lungs |
| alveolar sacs | clusters of alveoli at the ends of the alveolar ducts |
| alveoli | "microscopic, thin-walled sacs surrounds by networks of capillaries" |
| Anemia | "decreased oxygen-carrying capacity of the blood caused by insufficient numbers of RBCs, decreased hemoglobin concern, or a combo of both" |
| antigen | "cells or organisms that are ""not self""; initiates an immune response" |
| aorta | major artery of the systemic circulation that receives blood from the LV |
| aortic valve | a semilunar valve; separates the LV & the aorta during diastole |
| arytenoid cartilages | two of the cartilages of the larynx; attach to vocal cords |
| auricles | ear-shaped appendage of either atrium of the heart |
| B Lymphocytes | the type of lymphocyte that is responsible for humoral immunity through its transformation into a plasma cell & production of antibodies |
| basopenia | decrease in the total number of basophils in peripheral blood |
| Basophils | "granulocytic WBC characterized by the presence of numerous, dark blue-staining" |
| bifurcation of the trachea | the division of the trachea at its caudal end into the left & right main bronchi |
| bilirubin | the yellow breakdown product of hemoglobin |
| blastic transformation | B lymphocytes become plasma cells that produce antibodies |
| bronchi | largest air passageways in the lungs; branch into bronchial tree |
| bronchial tree | air passageways in the lungs between the main bronchi & the alveoli |
| bronchioles | some of the smallest branches of the bronchial tree; divide into alveolar ducts |
| bursa of Fabricius | specialized organ in brids needed for B lymphocyte development |
| Cardiac output | amount of blood that leaves the heart |
| cell-mediated immunity | "portion of the immune system that produces ""killer"" cells that directly attack foreign invaders" |
| Chemical system | "respiratory control that monitors the pH, O2 & CO2 content." |
| chemotaxis | movement of WBC to an area of inflammation in response to chemical mediators |
| choanae | 2 internal nares that open from the nasal chmabers into the roof of the mouth |
| chordae tendinae | "fine, threadlike cords that connect 2 AV to the appropriate papillary muscles in the ventricles" |
| chylomicrons | microscopic particles of fat found in chle & blood |
| circulating pool | neutrophils found in the peripheral blood flowing through the center of blood vessels |
| cricoid cartilage | one of the cartilages in the larynx; form & support the caudal portion of the larynx |
| Deoxyhemoglobin | hemoglobin that is not carrying oxygen |
| diapedesis | WBC leave the blood vessel & enter the tissue by squeezing through the tiny spaces between the cells lining the blood vessel walls |
| diaphragm | "thin, dome-shaped sheet of muscle that forms the boundary between the thoracic & abdominal cavities" |
| diaphragmaticus | the muscle that attaches the caudal aspect of the liver to the pubis is reptiles & amphibians |
| diastole | partrt of the cardica cycle associated w/ relaxation of the atria & ventricles & the filling of the chambers w/ blood |
| edema | abnormal accumulation of fluid (localized/generalized) w/I the tissues/cavities of the body |
| electrocardiogram (ECG/EKG | recording of the electrical activity of the heart |
| Embryonic Hemoglobin (HbE) | hemoglobin found in RBCs during early fetal life. |
| eosinopenia | decrease in the total number of eosinophils in peripheral blood |
| eosinophilia | increase in the total number of eosinophils in peripheral blood |
| Eosinophils | granulocytic WBC characterized by the presence of numerous red-staining granules |
| epiglottis | "most rostral of laryngeal cartilages, assists in breathing & swallowing" |
| epitope | the amino acids on the cell surface of antigens |
| erythropoiesis | production of erythrocytes |
| expiration | pushing air out of the lungs; exhalation |
| external respiration | process of respiration that occurs in the lungs |
| extravascular hemolysis | destruction of RBCs outside of a blood vessel |
| false vocal cords | vestibular folds; connective tissue b&s in the larynx of nonruminant animals in addition to vocal cords |
| faveoli | minute pits or depressions |
| Fetal Hemoglobin (HbF) | predominant hemoglovin in RBCs during later part of gestation |
| fibrinolysis | destruction of the fibrin str&s that make up the matrix of a clot |
| foramen of Panizza | shunt connecting the left & right atria in the crocodile heart |
| glottis | opening in the larynx |
| granulocytes | WBCs characterized by the presence of granules |
| granulopoiesis | production of granulocytes |
| gular fluttering | rapid vibations of the upper trhoart patch in some birds; used to increase cooling |
| gut associated lymphoid tissue (GALT) | lymphoid tissue scattered throughout the lining of the intestines |
| haptoglobin | transport plasma protein that carries free hemoglobin from intravascular hemolysis to the macrophages of the MPS for further breakdown |
| Heart rate | how often the heart contracts |
| Hematopoiesis | blood cell production |
| hematopoietic stem cells | tissue that produces blood cells |
| hemoconcentration | condition resulting from loss of plasma from blood into tissue |
| hemodilution | condition resulting in excess fluiid entering blood from tisse or IV injection |
| Hemoglobin | protein molecules found inside RBCs that are responsible for carrying oxygen molecules |
| hemoglobinemia | hemoglobin in plasma |
| hemoglobinuria | free hemoglobin found in urine |
| hemostasis | stoppind the flow of blood out of a blood vessle |
| Heterophils | phagocytic avian WBC similar to neutrophil |
| hilus | isolated area of some organs where blood vessles & other structures enter & leave |
| homeostasis | state of chemical equilibrium maintained in the body by feedback & regulation processes in response to internal & external changes |
| humoral immune response | type of defense immune response regulated by B lymphocytes |
| immunoglobulins | "created by B lymphocytes, aka antibodies" |
| inspiration | process of drawing air into the lungs; inhalation |
| intercostal spaces | space between two ribs |
| internal respiration | exchange of O2 & CO2 between the blood in the capillaries all over the body & the cells & tissues of the body |
| interpleural space | space betwween the pleural covering of the right & left lung |
| intravascular hemolysis | destructuion of RBCs w/I a blood vessel |
| larynx | """voice box"" short, irregulat tube of cartilage & muscle that connects the pharynx w/ the trachea" |
| lateral ventricles | blind pouches that project laterally between the vocal cords & the vestibular folds in the larynxes of nonruminants |
| lobes | subdivisions of the lungs |
| lower respiratory tract | all of the respiratory strucutres w/i the lungs |
| lymph | excess tissue fluid that is picked up by lymph vessels & retured to peripheral blood |
| Lymphocytosis | increase in the number of lyphocytes |
| Lymphopenia | decrease in the number of lymphocytes |
| lysosomes | organelle that fights pathogens; contains digestive enzymes that help destroy microorganisms that have been eaten by neutrophils |
| marginal pool | neutrophils found lining the walls of small blood vessels |
| mast cells | transient cell of connective tissue containing heparin & histamine used in the inflammatory response |
| Mechanical system | sets inspiration & expiration limits for normal resting breathing |
| mediastinum | area of the thorax between the lungs |
| megakaryocytes | "large, multinucleated cells in red bone marrow that are parent cells of platelets" |
| memory cells | lymphocytes that are programmed to remember the antigen that caused a previous immune response & to produce a more rapid response the second time |
| mesobronchi | avian bronchi that has entered the lungs & lost their reinforcing cartilaginous rings |
| minute volume | volume of air that an animal breathes in & out during one minute |
| mitral valve | left AV valve; separates the LA & venticle & protects the pulmonary venous system from the high pressures in the LV during systole |
| Monocytes | "large, phagocytic WBC" |
| monocytopenia | decrease in the number of monocytes |
| monocytosis | increase in the number of monocytes |
| mononuclear phagocyte system | collective term fro monocytes & tissue macrophages |
| multicameral lung | multichambered lung |
| myocardium | middle layre of the heaert & the main muscle layer responsible for contraction during systole |
| nares | nostrils |
| nasal meatus | any of the main passageways in the nasal cavity |
| nasal passages | convoluted air passageways in the nose that conduct air between the nostrils & the pharynx |
| nasal septum | midline barrier that separates the left & right nasal passages |
| Natural Killer Cells (NK) | lymphocytes that are neither T lymphocytes nor B lymphocytes but have the ability to kill some types of tumor cells & cells infected w/ various viruses |
| Neutrophils | phagocytes & first line of defense because of fast response time |
| olfactory sense | sense of smell |
| opsonins | plasma protein that cotas an antigen making it more attractive to phagocytes |
| opsonization | process by which osonins coat an antigen |
| Oxyhemoglobin | hemoglobin that is carrying oxygen |
| papillary muscles | "muscular, nipplelike projectiions in the heart that anchor the chordae tendineae" |
| parabronchi | subdivisions of the secondary bronchi in birds |
| paranasal sinuses | space w/i a skull bone that is an outpouching of the nasal cavity |
| partial pressure | portion of the overall pressure each gas exerts |
| paucicameral lung | lung w/ four chambers |
| pericardium | tissue that forms a sac around the heart to protect it & to control the movement of the heart w/i the throax |
| Peripheral blood | blood outside the bone marrow that is flowing to & from the heart & lungs in blood vessles |
| petechiae | "small hemorrhage found on the skin, mucous membranes, & serosal surfaces" |
| phagocytosis | ingestion of microorganisms by phagocytic cells |
| pharynx | throat; common passageway for the respiratory & digestive systems |
| phonation | voice production |
| Pleomorphic | describes a monocyte nucles that can change shape w/o dividing into segments |
| pluripotent stem cells (PPSCs | primitive cell type found in red bone marrow |
| polychromasia | describes immature RBC cytoplasm when it is still metabolicailly acive & has started prducing hemoglobin |
| Polycythemia | abnomral increase in number of RBCs |
| Polymorphonuclear | describes a nucleus that has many shapes |
| pulmonary | adj referring to the lungs |
| pulmonary artery | arises from the RV that delivers blood into the pulmonary circulation |
| pulmonary circulation | delivers unoxygenated blood to the lungs & oxygenated blood to the left side of the heart |
| pulmonary valve | separates the RV & the pulmonary arter during diastole |
| pyknotic | nucleus has died |
| red bone marrow | hematopoietic type of bone marrow |
| red pulp | area of the spleen that is filled w/ blood sinusoids & macrophages |
| renal portal system | the network of veins that transport blood from the extremities to the kidneys before returing it to the heart in birds. |
| residual volume | volume of air remaining in the lungs after the max amount of air has been forced out b expiration |
| respiratory center | area in the brain stem that controls the berathing process |
| roaring | produced by paralysis of the muscles that tighten the arytenoid cartilages & vocal cord on one side (usually left); laryngeal hemiplegia |
| senescence | process of aging |
| septum | partition in an organ or area |
| sinoatrial node | groups of specialized caridac muscle cells in the wall of the RA of the heart acts as the heart's pacemaker |
| sinuses | outpouching of the nasal passages that are housed w/i spaces in areas of the skull bones |
| Stroke volume | amount of blood ejected w/ each cardiac contraction |
| sulcus | "grooves, especially shallow grooves, in the cerebral cortex" |
| surfactant | componenet of the fluid that lines the alveoli in the lungs |
| syrinx | enlargement of the trachea above the sternum (birds) |
| systole | part of the cardiac cycle assoc w/ contraction of the ventricles & atria & ejection of blood into the arterial systems |
| T Lymphocytes | responsible for cell-mediated immunity |
| thoracic duct | large lymph vessel found in the thorax |
| thorax | aka thoracic/chest cavity |
| Thrombocytes | platelets |
| thrombopoiesis | production of platelets |
| thymocytes | pre T-cells in the thymus |
| thyroid cartilage | V-shaped that forms & supports the ventral portion of the larynx |
| tidal volume | volume of air breathed in & out in one breath |
| trachea | "windpipe; short, wide ube that extends from the larynx to the thorax & branches into the left & right main bronchi" |
| tricuspid valve | right AV valve; separates the RA & ventricle |
| turbinates | "4 thin, scroll-like bones that fill most of the space in the nasal cavity" |
| unicameral lung | one-chambered lung |
| upper respiratory tract | respiratory structures outside the lungs |
| vestibular folds | false vocal cords |
| vocal cords or vocal folds | 2 fibrous connective tissue b&s attached to the arytenoid cartilages that stretch across the lumen of the larynx & vibrate as air passes over them |
| white pulp | area of the spleen that contains lymphocytes |
| whole blood | blood that contains plasma & all the formed elements |
| yellow bone marrow | most common; consist mainly of adipose connective tissue |