BSC 1005 - Unit 2: Movement and Physiology

physiology

the science of biological function

human physiology

from atoms (and ions), molecules, cells, tissues, organs, organ systems to people

pathophysiology

describes changes in physiology associated with diseases caused by genetic mutations, infections, or environmental factors, etc

homeostasis

maintaining a constant internal environment

lactic acid

what is produced by the body if not enough O2 is supplied during exercise?

red blood cells, white blood cells, and platelets

what are the cellular components of blood?

red blood cells

specialized to transport oxygen to all part of the body; bi-concave shape; short diffusion distance for O2; filled with lots of hemoglobin

hemoglobin

what is oxygen bound to in red blood cells; binds 4 O2

blood

connects tissues and cells in the body; part of the cardiovascular system

plasma

component of blood; consists of water, electrolytes, and small molecules (i.e. O2, CO2, food molecules, metabolic wastes)

hematocrit

measures the % of RBCs in you blood volume; determines O2 carrying capacity of blood in normal individuals;

spectrin

cytoskeleton protein that helps RBCs maintain their shape