Chapter 2: Cells Flashcards
A method used to move compounds across a cell membrane to create or maintain and imbalance of charges, usually against a concentration gradient and requiring the expenditure of energy
Active Transport
The major source of energy for all chemical reactions of the body
Adenosine Triphosphate (ATP)
A type of connective tissue that contains large amounts of fat
Adipose (Fat) Tissue
The anterior surface at the bend of the elbow
Antecubital Fossa
The area of the neck that is bordered by the sternocleidomastoid muscle, the anterior midline of the neck, and the inferior border of the mandible
Anterior Triangle
A division of the skeletal system that includes the extremities and their attachments to the body
Appendicular Region
A division of the skeletal system that includes the head, neck, and trunk
Axial Region
The armpit
Axilla
Components of the nerve cell that conduct impulses to adjacent cells
Axons
The noncellular layer in an epithelial cell that anchors the overlying epithelial tissues
Basement Membrane
Hollow areas within the body that contain organs and organ systems
Body Cavities
Striated involuntary muscle that has the capacity to generate and conduct electrical impulses
Cardiac Muscle Tissue
Area of the anterior triangle of the neck that contains the carotid artery and internal jugular vein
Carotid Triangle
The cell wall; a selectively permeable layer of cells that surrounds intracellular contents and controls movement of substances into and out of the cell
Cell Membrane
The basic building blocks of life, made up of protoplasm (cytoplasm); specialized for particular functions
Cells
Organelles that are essential in cell division
Centrioles
Structures containing DNA within the cell’s nucleus; human cells contain 23 pairs of chromosomes
Chromosomes
The hair-like microtubule projections on the surface of a cell that can move materials over the cell surface
Cilia
Rows of tall, thin epithelial cells
Columnar Epithelium
The natural tendency for substances to flow from an area of higher concentration to an area of lower concentration, within or outside the cell
Concentration Gradient
The hollow portion of the skull
Cranial Cavity
Shrinkage of a cell that results when too much water leaves the cell through osmosis
Crenation
Rows of square-shaped epithelial cells
Cuboidal Epithelium
The gel-like material inside a cell. It makes up most of the cell’s volume, and suspends the cell’s organelles; also called protoplasm
Cytoplasm
The clear liquid portion of the cytoplasm
Cytosol
Components of the neurons that receive impulses from the axon and contain vesicles for release of neurotransmitters
Dendrites
The genetic material found on the chromosomes in the cell’s nucleus
Deoxyribonucleic Acid (DNA)
A process where molecules move from an area of higher concentration to an area of lower concentration
Diffusion
Disturbances in cardiac rhythm
Dysrhythmias
Salt or acid substances that become ionic conductors when dissolved in a solvent (ie, water); chemicals dissolved in the blood
Electrolytes
Negatively charged particles that revolve around the nucleus of an atom
Electrons
The uptake of material through the cell membrane by a membrane-bound droplet or vesicle formed within the cell’s protoplasm
Endocytosis
A series of membranes in which proteins and fats are manufactured
Endoplasmic Reticulum
The release of secretions from cells that have been accumulated in vesicles
Exocytosis
Substances located outside of the cell membrane
Extracellular
Fluid outside of the cell, in which most of the body’s supply of sodium is contained
Extracellular Fluid (ECF)
The process whereby a carrier molecule moves substances in or out of cells from areas of higher to lower concentration
Facilitated Diffusion
Tail-like microtubule structures capable of motion to propel the cell
Flagella
Areas in the infant’s skull where the sutures between the skull bones have not yet closed
Fontanelles
Bony structures that attach the limbs to the body (hip and shoulder)
Girdles
A set of membranes in the protoplasm involved in the formation of sugars and complex proteins
Golgi Apparatus
An abnormal accumulation of bloody fluid within the pleural space following trauma
Hemothorax
An excessive amount of potassium in the blood
Hyperkalemia
A serum sodium level greater than 145 mEq/L
Hypernatremia
A diabetic emergency that occurs from a relative insulin deficiency, resulting in hyperglycemia, hyperosmolarity, and an absence of significant ketosis
Hyperosmolar Hyperglycemic Nonketotic Coma (HHNC)
Abnormally low blood glucose level
Hypoglycemia
A low concentration of potassium in the blood
Hypoalemia
A serum sodium level that is less than 135 mEq/L
Hyponatremia
A dangerous condition in which the supply of oxygen to the tissues is reduced
Hypoxia