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*LE #1 Review* - .
2 key organ systems that maintain homeostasis - Nervous & Endocrine System
Amino Acids - forms proteins (building blocks)
Functions: support, movement, transport, buffering, metabolic, regulation, coordination &
control, defense.
Anatomical Position - face forward, palms forward
H+ - weak attraction between polar molecules.
Ionic - one ion loses an electron and one gains (NaCl)
Convalent - atoms share pairs of electrons (CO2); strongest bonds; polar - unequal, hydrophilic,
nonpolar - equal, hydrophobic
Buffers - regulate and stabilize pH of a solution by removing/replacing H+ ions
Carbohydrates - --
Centrioles - movement of chromosomes during cell division, organization of microtubules in
cytoskeleton.
Cholesterol - large steriod/lipid
helps maintain structure
Coronal Section - divides into dorsal and ventral, anterior and posterior
Disorder - abnormal function
Disease - more specific term for illness, set signs and symptoms.
DNA - double stranded, deoxyribosenucleic acid, thymine base,
RNA - single stranded, ribonucleic acid, uracil base
Electrons - negative charge, found in electron cloud.
, Protons - positive charge, found in nucleus.
Neutrons - no charge, found in nucleus.
Endocytosis - Endocytosis - take in using vesicles
receptor mediated target molecules
pinocytosis - liquid
phagocytosis - solids
Exocytosis - secretion, hormones/vesicles.
Facilitated Diffusion - with concentration gradient (up and down), use carrier proteins, transports
large molecules/ions.
Golgi Body with vesicles - storage, alteration, packaging of secretory products and lysosomal
enzymes.
Homeostasis - staying the same, protects our cell by internal environment to keep constant.
Ex: blood pressure, heart rate, respiration.
Hypothalamus - link between the nervous and endocrine system, controls homeostasis.
Hypotonic - salt outside is less = water moves in = cell bursts (lysis).
Hypertonic - more salt outside = water leaves = cell shrinks (crenation).
Isotonic - equal, water moves in and out.
Infraperitoneal - lie inferior to peritoneal cavity
ex) bladder, distal large intestine
Retroperitoneal - organs that lie between the peritoneal lining and the muscular wall of
abdominal cavity
ex) kidneys
Levels of Organization - atom, molecule, cell, tissue, organ, organ system, organism
Lipids - C, H, 0 (small)
form essential structural components of all cells
energy reserves, stored as fats
ex) fatty acids, eicosanoids, glycerides, steroids, phospholipids
Lysosome - intracellular removal of damaged organelles or pathogens