-
Active Transport
Movement of a chemical by the use of energy through a gradient, such as a cell membranem in concentration or electrical potential. This movement is opposite the normal movement by diffusion
-
Adenosine Triphosphate (ATP)
The major source of energy for all chemical reactuins of the body
-
Adipose Tissue
A type of connective tissue that contains large amounts of fat
-
Antecubital fossa
The anterior surface at the bend of the elbow
-
Anterior triangle
Area of the neck that is bordered by the sternocleidomastiod muscle, the anterior midline of the neck and the inferior border of the mandible
-
Appendicular region
A division of the skeletal system, which includes the extemities and their attachments to the body
-
Axial region
A division of the skeletal system, which includes the head, neck, and trunk
-
-
Axon
A component of the nerve cell that conducts impulses away from the nerve cell body
-
Basement Membrane
The noncellular layer in an epithelial cell that secures the overlying epithelial tissues
-
Body cavities
Hollow areas within the body that contain organs and organ systems
-
Cardiac muscle
Striated involuntary muscle that has the capacity to generate and conduct electrical impulses
-
Carotid triangle
Area of the anterior triangle of the neck that contains the catotid artey and internal jugular vein
-
Cartilage
Plates of shiny connective tissue that are lubricated by synovial fluid, which provides a slippery surface over which the bones may move freeely
-
Cell membrane
A srtucture that surrounds protoplasm, consisting of the fatty substances that separate one cell from its neighbors; also called the plasma membrane
-
Cells
Made up of protoplasm or cytoplasm, specialized for particular functions, these are the building blocks of life
-
Centrioles
Orgnaelles that are essential in cell division
-
Chromosomes
Structures containing DNA within the cell's nucleus. Human cells contain 23 pairs of chromosomes
-
Cilla
Hair-like microtubule projections on the surface of a cell that can move materials over the cell surface
-
Coelom
A fluid-filled body cavity that contains organs and connective tissue
-
Columnar
Rows of tall thin epithelial cells
-
Concentration gradiant
The difference in concentrations of a substance on either side of a selectively permeable membrane
-
Cranial Cavity
The hollow portion of the skull
-
Crenation
Shrinkage of a cell that results when too much water leaves the cell through osmosis
-
Cuboidal
Rows of square-shaped epithelial cells
-
Cytoplasm
A viscous liquid matrix that supports all internal cellular structures and provides a meduim for intracellular transport; also called protoplasm
-
Dendrite
A component of the nerve cell that receives electrical impulses and conducts them toward the cell body
-
Deoxyribonucleic acid (DNA)
The genetic material found on the chromosomes in the cell's nucleus
-
-
Diffusion
Movement of particles or solutes from an area of high concentration to low conventration
-
Diploid
The two sets of 23 chromosomes, one set donated by each parent, found in all cells, except sperm and ova cells, which only contain a total of 23 chromosomes
-
Dysrhythmias
Potentially life-threatening heart rhythm disturbances
-
Electrolytes
Salt or acid substances that become ionic conductors when dissolved ina solvent (ie, water). Chemicals disolved in the the blood
-
Electrons
Negativvely charged particles that are part of the make-up of an atom
-
Element
the smallest unit of a single chemical substance, such as hydrogen, oxygen, or potassium
-
Endocytosis
The uptake of material through the cell membrane bu a membrane-bound droplet or vesicle formes within the cell's protoplasm
-
Endoplasmic Reticulum
A series of membranes in which proteins and fats are manufactured
-
Exocytosis
The release of secretions from cells that have been accumulated in vesiciles
-
Extracellular
Substances located outside of the cell membrane
-
Extracellular fluid (ECF)
Fluid outside of the cell, in which most of the body's supply of soduim is contained
-
Facilitated diffusion
Process whereby a carrier molecule moves substances in or out of cells from areas of higher to lower concentration
-
Filtration
A process of the movement of water out of plasma across the capillary membrane into the interstitial space
-
Flagellum
A tail-like microtubule structure capable of motion to propel the cell.
-
Fontanels
Areas in the infant's skull where the sutures between the skull bones have not yet closed
-
Girdles
Bony structures that attach the limbs to the body
-
Golgi complex
A set of membranes in the protoplasm involved in the formation of sugars and complex proteins
-
Hapliod
The 23 chromosomes found in a sperm or ova cell
-
Hemothorax
An abnormal accumulation of bloody fluid within the pleural cavity following trauma
-
Homeostasis
The maintenance of a relatively stable internal physiologic environment
-
Hydrostatic pressure
Blood pressure in the vessel walls created by the heart beating pushes the water out of the capilary into the interstitial space
-
Hyperkalemia
Abnormal elevation of serum potassuim levels
-
Hypernatremia
An abnormally high sodium level in the blood
-
Hyperosmolar hyperglycemic nonketotic coma (HHNC)
A diabetic emergency that occurs from a relative insulin deficiency, resulting in marked hyperglycemia but the absence of ketones and acidosis
-
Hypertonic
A solution with an osmotic pressure greater than that of body fluid (ie, a cell placed in the solution will shrink).
-
Hypoxia
A state of decreased oxygenation
-
Integument
Skin, the covering of the body surface
-
Intracellular
Substances, such as the organelles that are found inside the cell membrane
-
Intracellular fluid (ICF)
Fluid within cells in which most if the body's supply of potassuim is contained
-
Involuntary
Not normally under conscious control, as in muscle
-
Ion channel
Protein-lined pores or transport channels, specifically sized for each substance, which allow electrolyte movements amoung the cells
-
Isotonic
A solution that has the same osmotic pressure as the cells and body fluids, (ie, a cell placed in the solution will neither shrink not swell).
-
Joint
The point where two or more bones come together allowing movement to occur
-
Krebs cycle
A sequence of reactions in an organism in which oxidation of acids provides energy for storage in phosphate bonds (as in ATP); also called the tricarbocxlic acid cycle
-
Ligaments
Tough white bands of tissue that bind joints together, connecting bones to cartilage
-
Lipid bilayer
the double later of fatty components that creat the outside of the cell membrane
-
Lysis
The process of disintergration or or breakdown of cells that occurs when excess water enters the cell through osmosis
-
Lysosomes
Membrane-bound vesicles that contain a variety of enzymes functioning as a cell's digestive system
-
Mediastinum
The space between the lungs, in the center of the chest, that contains the heart, trachea, mainstem bronchi, part of the esophagus, and large blood vessels
-
Meiosis
A specialized form of cell division that results in the production of mature sperm and ova
-
Microtubules
Hollow filamentous structures that make up various components of the cell
-
Mitochondria
Small rod-like organelles that function as the merabolic center of the cell and produce ATP
-
Mitosis
The division of one cell into two geneically identical and equal daughter cells
-
Myoclonus
Abnormal and persistent muscle spasms
-
Neuroglia
Collectively, the name for the connective and supporting tissuesj of the nervous tissue
-
Neuron
The main functional unit of the nervous system
-
Neutrons
Uncharged particles that are part of the make up of an atom
-
Nonstriated
Smooth muscle tissue
-
Nuclear Envelope
The membrane that surrounds the nucleus of the cell
-
Nucleoli
Rounded, dense structures in the protoplasm that contain RNA and synthesize proteins
-
Nucleus
The nerve center, or central body, of the cell, embedded within the protoplasm
-
Oncotic force
An opposing pressure to hydostatic pressure, it pulls water back into the capillary from the interstitial space in an effort to create balance
-
Organ
Different types of tissues working together to perform a particular function
-
Organells
The internal structures within the cell
-
Organism
Any living thing considered as a whole, made up of various organ systems
-
Organ system
A group of organs that have a common purpose, such as the skeleton and muscles, circulatory, and respiratory systems, amoung others
-
Osmosis
The movement of a solvent, such as water, from an area of low solute concentration to one of high concentration through a selectively permeable membrane to equalize concentrations of a solute on both sides of the membrane
-
Osmotic Pressure
The measure of the tendancy of water to move by osmosis across a membrane
-
Oxidative metabolism
Process in which oxygen is used chemically to produce energy from carbohydrates
-
Parietal portion
The portion of the serous membrane that lines the walls of the trunk cavitites
-
Pericardial cavity
The region around the heart
-
Pericardial effusion
An abnormal accumulation of fluid within the pericardial sac
-
Pericardial Sac
The fluid-filled potential space between the layers of the pericardium
-
Pericardial Tamponade
A condition that occurs as fluid accumulates around the heart, which restricts the heart's stroke volume
-
Pericarduim
The serous membranes that surround the heart
-
Periosteum
The membrane that covers the bones of the skull and all other bones, except at articular surfaces
-
Peripheral nerves
The nerves that extend from the brain and spinal cord to various parts of the body by exiting between the vertebrae of the spine
-
Peritionitis
An inflammation of the peritoneum
-
Phagocytosis
Endocytosis involving solid particles
-
Pinocytosis
Endocytosis involving liquid
-
Pleura
Serous membranes surrounding the lungs
-
Pleural effusion
An abnormal accumulation of fluid within the pleural cavity
-
Pneumothorax
An abnormal accumulation of air within the plaural cavity
-
Popliteal fossa
The space behind the knee
-
Posterior triangle
Area of the neck containing the lymph nodes, brachial plexus, spinal accessory nerve, and a portion of the subclavian artery
-
Protons
Positively charged particles that are part of the make-up of an atom
-
Protoplasm
A viscous liquid matrix that supports all internal cellular structues and provides a meduim for intracellular transport; also called cytoplasm
-
Pseudostratified epithelium
A single later of epithelail cells of varying heights, all of which attach to the basement membrane, but all do not reach the free surface
-
Remodeling
Replacing dead cells with new cells on an ongoing basis
-
Retroperitoneal organs
The organs (kidneys, pancreas, and duodenum) and major blood vessels located in the retroperitoneal space
-
Retroperitoneal space
Area locared posterior to the parieral peritoneum that contain the kidnets, pancreas, duodenum, and major blood vessels
-
Ribonucleic acid (RNA)
Nucleic acids that contain ribose and uracil as structural components and are associated with controlling cellular activities
-
Ribosomes
Organelles that contain RNA and protein
-
Selective permeability
Allowing some but not all substances to pass through a membrane to maintain homeostasis
-
Serous membrane
A specialized form of thin connective tissue that is broken into two layers: the parietal portion and the visceral portion
-
Serum Osmolality
The number of osmotically active particles in serum
-
Simple epithelium
A single later of cells, all of which are in contact with the besment membrane of the pithelial cell
-
Skeletal Muscle
Striated vountary muscle used to move the body parts
-
Skeletal System
The 206 bones that form the foundation of and frame of the body
-
Skull
the protective vault that houses the brain and is composed of the cranium and facial bones
-
Smooth Muscle
Nonstriated involuntart muscle found in vessle walls, glands, and the GI tract
-
Soduim-potassium exchange pump
A mechanism that uses active transport to move sodium out of the cells and potassium into the cells
-
Solutes
Particles, such as salts, that are dissolved in a solvent
-
Spinal cavity
The spinal column or vertbral canal, housing the spinal cord
-
Spindle fibers
Microtubules radiating from the centrioles
-
Squamous
Flat sheets of epithelial cells
-
Stratified epithelium
More than one layer of cells, only one of which is in contact with the basement membrane of the epithelial cell
-
Striated
Muscle tissue that has microscopic bands and may be either voluntary, such as leg muscles, or involuntary, such as cardiac muscle
-
Synovial fluid
Lubricating fluid found in a joint
-
Tachycardia
A rapid respiratory rate
-
Tendons
Tough cords or bands of dense white fibrous connective tissue that are continuous with the periosteum of the bone
-
Tissue
Groups of similar cells that work together
-
Transitional epithelium
Laters of straitified cells that change shape from cuboidal to squamous when the organ is stretched
-
-
Vertevral Column
The backbone, composed of the vertebrae, through which the spinal cord travels
-
Visceral portion
The portion of a serous membrane that covers the outside of an internal organ
-
Voluntary
Consciously controlled, as in skeletal muscle tissue
|
|