... Kidneys viewed from behind with spine
The kidneys are bean -shaped excretory organs in ... the posterior part of the abdomen . There is one on each side of the spine
just below the liver and spleen . Superior to each kidney is an ...
... extend to macroscopic lengths. The longest axons in the human body, for example, are those of the sciatic nerve , which run from the base of the spine
to the big toe of each foot. These single-cell fibers may extend a metre or even longer.
In vertebrates generally, the axons of many neurons ...
... with a roughened surface, generally smaller than a tuberosity
one of two specific tuberosities located on the femur
a relatively long, thin projection or bump
articulation between cranial bones.
one of two specific ...
... branches or "arbors."
The term "dendrite" comes from the Greek word dendron , meaning "tree".
Compare : axon
See also : dendritic spine
... as arachnodactyly . In addition to affecting height and limb proportions, Marfan syndrome may produce other skeletal symptoms. Curvature of the spine
( scoliosis ) is a common problem, as is abnormal indentation ( pectus excavatum ) or protrusion ( pectus carinatum ) of the sternum . These ...
... not much larger than than the cell nucleus it contains. The axon of a human motoneuron can be over a metre long, reaching from the base of the spine
to the toes.
Neurons communicate with one another and to other cells through synapses , where the axon tip of one cell impinges ...
... of synaptic inputs
5 Detailed properties and regulation
At a prototypical synapse, such as a dendritic spine
, a mushroom-shaped bud projects from each of two cells and the caps of these buds press flat against one another. At this interface, the ...