Ceramide

Ceramides belong to a class of lipid molecules and are the principal component of intercellular lipids.
It is also found in the skin.

Structure:

Uses:
It is an important component in the cohesion of the cells of the skin i.e. holds the cells of the skin in a smooth and firm structure. Ceramide is used as an emollient in the products of hair care.

Liposome

Introduction:
Liposome is the type of extremely small artificial sacks made up of lipid monolayers or the layers can be more than one.

The outer layers are very reactive chemically and helps in the coupling of antigens, nucleic acid probes, cell recpetors and antibodies.

Size:
Liposomes may range from 50 nm to 800 nm.

Afterload

Afterload: The load or force against which there is shortening of cardiac muscles.

Afferent

Afferent:
1. From the outer body to the brain or spinal cord.
2. Inflow towards the center which in the case of nerves is carrying of impulses from the other body parts towards the brain or spinal cord and in the case of blood vessels is carrying of blood towards an organ.

Adrenergic receptors

Adrenergic receptors: These are nerve endings of effector tissues, most of which can be excited by norepinephrine and/or epinephrine and adrenergic drugs.

Adrenergic nerve activity

Adrenergic nerve activity: Sympathomimetic amine activity

Adrenergic amines

Adrenergic amines: Those agents which have similar activity as that induced by adrenergic nerve activity for example epinephrine and ephedrine.