Unit 1 Flashcards
Abdominal Cavity
contains stomach, intestines, spleen, liver, and other organs
Separated from thoracic by diaphragm
Anatomical Position
Body erect, feet slightly apart, palms facing forward, thumbs point away from body
Anatomy
Study of the body’s structures. Comes from Greek work study of structure, means to cut
Can feel and touch
Anion
Ion carrying a negative charge (gained an electron)
Anterior
Front (ventral)
Atom
Basic building block of elements (matter)
Atomic Number
Number of Protons
ATP
Richest energy source; energy carrier; most common form of energy used in body
Blood pH
7.35-7.45
Buffers
- Systems that resist abrupt and large swings in the pH of body fluids
- Carbonic acid-bicarbonate system
- Carbonic acid dissociates, reversibly releasing bicarbonate ions and protons
- The chemical equilibrium between carbonic acid and bicarbonate resists pH changes in blood
Cardiovascular System
-Composed of the heart, blood vessels, and the blood
-Functions:
Pumps blood
Blood vessels transport blood throughout the body
Carbohydrates
- 1-3% cell mass
- 3 different categories
- Give you quick energy (1-4 hours)
Catabolism
- All of the decomposition reactions that occur in the body
- Release energy
Cation
Have lost one or more electrons
Cephalic
Relating to the head
CH4
Methane
Chemical Energy
- Stored in the bonds of chemical substances
- ATP: Most common form of chemical energy
Chemicals in Human Body
- Oxygen
- Nitrogen
- Carbon
- Hydrogen
Collagen
Main structural protein found in animal connective tissue
Colloid
a. k.a. Emulsions
- Heterogenous mixtures whose solutes do not settle out
- You cannot see through them
- Exp. Plasma
Compounds
Two or more different kinds of atoms chemically bonded together
Control Center
- Determines the set point at which the variable is maintained (brain)
- 1 of the 3 interdependent components of homeostatic control mechanisms
Covalent Bond
Share two or more electrons that produces molecules
Cranial Cavity
Division of the Dorsal cavity that holds the brain (skull)