science section Flashcards
the 4 types of tissues
muscle
epithelial
connective
nervous
define natural selection vs evolution
Evolution is a gradual change in the inherited traits of a population over many generations.
Natural selection is mechanism to cause evolution by traits enhance survival passed generations
define biogeography
geological distribution of plants animals
how many layers of heart and what are they
3 layers
epicardium myocardium enocardium
things that affect the heart rate
physical activity
body temperature and concentration of ions
hypertension is
elevated arterial pressure
Arteriosclerosis
decrease in elasticity of heart walls
narrowing of lumen
fibrillation is ?
rapid heart beats
what is the blood plasma made out of and what are the concentrations
7 percent of blood is plasma
albumin
fibrinogen
globulin
passage way on the top of the trachea is know as
pharynx
what part of the CNS controls breathing
Medulla and the pons
nerve that controls contraction of the diaphrapm
phrenic nerves
define the following
anoxia
atelectasis
dyspnea
anoxia lack of oxygen
atelectasis collaspe lung
dyspnea: Difficult breathing cycle
T/F the cranial nerves are controlled by the cns
F controlled by PNS
What nerves belong to the PNS
CRANIAL except the optic nerve
SPINAL that innervate organs muscles and sensory system
spinal nerves that branch out of the spinal cord
