Teas Exam Must Know Questions

Vocabulary flashcards covering key topics for the TEAS exam, including human anatomy, physiology, microbiology, and general science principles.

Peripheral and central nervous systems

The two major parts of the nervous system.

Carbonic acid

The substance that donates $H^+$ ions to act as a buffer when blood pH rises.

Melanin

The substance that protects the skin from ultraviolet radiation.

Larynx

The structure that houses vocal cords needed for speech.

Pleura

A connective tissue sheath that covers the lung.

Triple point

The term describing when solid, liquid, and gas exist simultaneously in a phase diagram.

$$2 \text{ red, } 2 \text{ white}$$

The expected phenotype ratio when a heterozygous red flower plant crosses with a white flower plant.

Days 12-14

The time during the menstrual cycle, known as the ovulation phase when the LH surge peaks, that a woman is most fertile.

Anti-diuretic hormone

The hormone whose release causes increased water reabsorption in the collecting duct.

Scientific publication

The process necessary for new findings so other scientists can validate or disprove them.

Pulmonary vein

A vessel that is part of the pulmonary circuit.

Amylase

A pancreatic secretion that breaks starch down into disaccharides.

$$mg$$

The unit used to indicate mass.

Urea

The substance excreted by sweat glands during protein breakdown and ammonia formation.

Epiglottis

A flap of cartilage that prevents food from entering the trachea.

Water property

The ability to dissolve polar and ionic compounds.

Concentration gradient diffusion

The process that moves most carbon dioxide from the blood into the alveoli.

Ventral cavity

The body cavity divided into the thoracic and abdominopelvic cavities.

Tendons

Connective structures that connect skeletal muscles to bone.

Uracil

The nitrogenous base found in RNA but not in DNA.

Totipotent cell

A cell that develops into any kind of cell.

pH of 3

A substance that is 10 times more acidic than a substance with a pH of 4.

Myelin sheath

The structure that provides insulation for a nerve cell.

Solid to liquid transition

A phase change where particles become less ordered.

Density tools

The lab tools needed to measure the density of small irregular solids, including a graduated cylinder, water, and weighing balance.

Proteins

The class of biological molecules that includes enzymes.

Catalyst

A substance that results in a chemical reaction completing in less time.

Virus

The pathogen responsible for a cold and sore throat for which antibiotics are ineffective.

Crural

The body region where the tibia and fibula are located.

Repolarization

The action allowing a neuron to return to its resting state as potassium channels open and potassium exits the neuron.

Chromatin

The structure that contains a human's hereditary information.

Proton emission outcome

The result where an atom's atomic mass ($A$) and atomic number ($Z$) both decrease by 1 ($A-1, Z-1$).

Helper T-cells

Cell types that stimulate other immune cells to attack and destroy foreign agents.

Provisional

The status of an unfalsified hypothesis in scientific experimentation.

Endocardium

The tissue that lines the interior surfaces of the heart.

Psoriasis

A disease classified as noninfectious.

Lysosomes

The organelle that serves as the site of intracellular digestion.

Spectrophotometer

A tool that measures liquid turbidity by detecting light transmission through a sample.

Alveoli

The respiratory structures damaged by diseases that disrupt gas exchange, such as emphysema.