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Anatomy definitions > H-words > Flashcards

Flashcards in H-words Deck (9):
1

hematocrit

percentage of total blood volume occupied by (mostly red) blood cells, in humans it is normally between 40-50%

2

homeostasis

ability of a system or living organism to adjust its internal environment to maintain a state of dynamic constancy; such as the ability of warm-blooded animals to maintain a stable temperature

3

hydration

when water molecules surround polar molecules and ions shielding off their charges and ensuring that they remain in the solution

4

hydrogen-bond

weak interaction between an H-atom bound to a highly electronegative atom (O, N) in a molecule, and another highly electronegative atom (O, N), in the same or a different molecule

5

hydrophilic (lipophobic)

polar or charged molecule that is able to interact with water molecules, thus can be dissolved in water

6

hydrophobic (lipophilic)

nonpolar molecule that is unable to interact with water molecules, thus insoluble in water

7

hypernea/hyperventilation

increased lung ventilation

8

hyperpolarization

toward the end of an action potential when the environment within the cell goes below (more negative) than the resting state value, but quickly stabilizes

9

hypopolarization

a shift of the resting membrane potential toward less negative values – a decrease