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PHYSIO CARDS
Question | Answer |
---|---|
Which membrane receptor acts to directly change ion permeability when stimulated? | The inside of the membrane becomes less negative. |
pulmonary circulation | blood vessels that carry blood from the right side of the heart to the alveoli of the lungs and then back to the left side of the heart |
chemically gated | activated by ligand binding |
systemic circulation | blood vessels that carry blood from the left side of the heart to all organs and tissues of body except the alveoli and then back to the right side of the heart |
negative feedback | opposite direction of D toward SS -restores controlled variable |
Noncovalent bond types | 1. ionic bonding 2. hydrogen bonding 3. hydrophobic interactions |
Covalent bonds | very strong bonds -sharing of e- pair --- not always equal (sometimes causes partial charges) -"like dissolves like" |
ionic bonding | electrical attraction of opposite charges (cations and anions) -very strong bond -very weak in water |
hydrogen bonding | interaction with bound H -weak interactions |
components of the plasma membrane | 1. phospholipids 2. cholesterol 3. proteins 4. glycocalyx |