Chapter 1
the study of function within the body
what is physiology?
elements that make up 96.3% of the body
what are oxygen, carbon, hydrogen, and nitrogen?
an impermeable junction that prevents molecules from passing through the intercellular space
what is a tight junction?
tissue that supports, protects, binds, and hold other tissues together
what is connective tissue?
body system that contains the nasal cavity, pharynx, and larynx
what is the respiratory system?
a body system that makes up 2% of the body's weight
what is the nervous system?
a bond that has an unequal sharing of electrons
what is a polar covalent bond?
movement of a substance through a membrane against a concentration gradient
type of exocrine gland found in the intestinal glands
what are simple tubular glands?
substance that prevents a large, sudden change in pH
what is a buffer?
a process that reverses the initial stimulus
what is negative feedback?
a compound that contains both carbon and hydrogen atoms
what is an organic compound?
a solution with an equal concentration of solute and water
what is an isotonic solution?
muscle that is long, cylindrical, and striated
what is skeletal muscle?
polymerization reactions during which monomers are covalently linked, producing net removal of a water molecule for each covalent linkage
what are condensation reactions? (or dehydration synthesis)
a body cavity that contains the brain
what is the cranial cavity?
a solution that contains a high volume of H+
what is an acidic solution?
a stack of smooth membrane sacs and associated vesicles close to the nucleus
what is the golgi apparatus?
membrane that covers the body surface
what is cutaneous membrane?
simple diffusion of water through a selectively permeable membrane
what is osmosis?
away from the midline of the body; on the outer side of
what is lateral?
7.35-7.45
what is the pH of human blood?
tough, insoluble protein fibers constructed like woven ropes
what are intermediate filaments?
membrane that lines body cavities that lack opening to the outside
what is serous membrane?
phase of the cell cycle in which the cell grows and makes final preparations for cell division
what is the G2 phase?