A and P, chemistry exam 1 Flashcards
Abdominal Cavity(superior)
Contains stomach, intestines, spleen, liver, and other organs.
Anatomical Position
The body is erect with feet slightly apart like standing at attention with palms facing forward and thumbs point away from body
Anatomy
Is what you can see! Very concrete. Studies the structure of body parts and their relationships to one another
Anion
Aquires a net negative charge. Have gained 1 or more electrons.
Anterior(ventral)
Toward or at the front of the body, in front of →
Atom
Smallest particle of an elemental substance that exhibits the properties of that element; composed of protons, neutrons, and electrons. more or less building blocks.
Atomic Number
The number of protons in an atom.
ATP
! of 3 major Nucleic Acids. Energy source for body
Blood PH
The measure of relative acidity or alkalinity of solution, Normal blood Ph in body is between 7.35-7.45. Can tell how long you have been dead and what action to take deopending on how low it is. if goes above or beloe death will occur.
Buffers
Systems that resist abrupt and large swings in the Ph of body fluids. Huge deal maintaining Homeostasis.
Cardiovascular System
Includes heart and blood vessels, pumps heart blood, blood vessels transport blood throughout the body
Carbohydrates
Energy simple and complex. Gives energy but goes away quickly. Organic compound composed of carbon, hydrogen, and oxygen. includes starches, sugars, and cellulose.
Catabolism
Process in which living cells break down substances into simpler substances.
Cation
An ion with a positive charge-have lost 1 or more electrons
Cephalic
face
CH4
non-polar molecule. Carbon, hydrogen
Chemical Energy
energy stored in the bonds of chemical substances.
Chemicals in Human Body
Collagen
Found in all conective tissues, is the single most abundant protein in the body. It is responsible for the tensile strength of bones, tendons, and ligaments.
Colloid(emulsions)
Sollute particles are larger than its solution and scatter light, do not settle out. Cant see though but think you should. EX- Plasma
Compounds
Substance composed of 2 or more different elements, the atoms of which are chemically united. 2 or more different kind of atoms bind, they form milecules of a compound. Ex- C+H+H+H+H=CH4 (METHANE GAS)
Control Center
Homeostatic control- Receptor is a trype of sensor that monitors the environment and responds to changes called stimuli, by sending info (input) to the second somponent, the control center. Input flows from the receptor to the comtrol center slong the so called afferent pathway. Control center determines the set point, which is the level or range a cariable is to be maintained.
Covalent Bond
Electron sharing produces molecules in which the shared electrons occupy a single orbital common for both atoms- sharing of these eletrons produces molecules.
Craniel Cavity
In the skull, encases the brain. The only one totally protected by bone.
Cytology
Study of cells
Deep(internal)
Away from the body surface, more internal. Ex-the lungs are deep to the skin.
Definition of cells, tissues, organs.
Cells are structural unit of all livings things. Tissue consists of simular types of cells. Primary types of the body are epithelial, connective, muscle, and nervous tissue. Organs are made up of different types of tissues-at least 2.
Digestive System
Oral cavity, esophagus, stomach, small intestines, large intestines, rectum, anus, liver.
Breaks down food into absorbable units to enter blood
eliminates indigestive food and feces.
Dispole(polar-molecule)
Nonsymmetrical molecules that contain electrically unbalanced atoms
Distal
Farther away from the attached end of a limb or the origin of a structure.
Ex- The knee is distal to the thigh
Dorsal Cavities(posterior)
Protects the fragile nervous system organs, has 2 subdivisions
A. cranial: in the skull, encases the brain
B. Vertbral(spinal) Encloses the delicate spinal cord.
Effector
Provides the means for the control centers response(output) to the stimulus. The results of the response then feedback to influence the efeect the stimulus, wither reducing ir (negative feedback) so that the whole control process is shut off, or enhancing it (positive feedback) so that the whole process continues at an even faster rate.
Electrical Energy
Energy formed by the movement of charged particles across cell membranes. Ex- nervous system, heart, muscle.
Electrons(e-)
Negative charge equal in strength to the positive charge of a proton.
Elements
Unique substances that cannot be broken down into simpler substances by ordinary chemical methods.
Elements in the Human Body
Carbon(C), Oxygen(O), Hydrogen(H), Nitorgen(N)
Embryological Anatomy
Concerns developmental changes that occur before birth
Endergonic Reactions
Energy absorbing, contain more potential energy in their chemical bonds than did the reactants.
Endocrine System
Glands secrete hormones that regulate processes such as growth, reproduction, and nutrient use(metabolism) by body cells, Ex- ovary, testes, pancreas, thyroid glands, adrenal gland
Energy
The capacity to do work; may be stored (potentail energy) or in action (kinetic energy).
Enzymes
A protein that acts as a biological catalyst to speed up a chemical reaction.
Exergonic Reactions
Chemical reaction that releases energy, a catabolic or oxidative reaction.
Feedback Systems
Negative and positive feedbacks. Negative feedback reduces or shutoff its intensity. ex- a heating system. Positive feedback enhances the original stimulus so that the response is accelerated. ex- labor and blood clotting.