Nervous System & Cardiovascular System Flashcards
▪ is a network of specialized cells that communicate information about an animal’s surroundings and itself.
▪ processes this information and causes reactions in other parts of the body.
▪ composed of neurons and other specialized cells called glia, that aids in the function of the neurons.
▪ It is divided broadly into two categories: the peripheral and the central
Nervous system
o composed of the brain, its stem and spinal cord;
o contains several pools of neurons interconnected by cell processes
Central nervous system
o comprise the nerve trunks (cranial & spinal nerves), ganglia and nerve endings)
Peripheral nervous system
The fibrous covering membrane
that encloses the brain & spinal cord.
Meninges
The outer most tough fibrous covering consisting of collagen and some elastic fibers and blood vessels =pachymeninx
Dura mater
The middle layer of distinct collagen & elastic fibers with many trabeculae on its surface;
Trabeculae serve as a supportive network for the subarachnoid space occupied by CSF
Arachnoid
The inner most protective
membrane extending into the
depressions and fissures of the brain
and spinal cord; consists of fine
collagenous & elastic fibers.
Pia mater
Arachnoid and Pia mater forms the ______________
Leptomeninges
It is composed of Ependyma, Tela choroidea, and Vascular plexus.
Choroid plexus
It is composed of a thin layer of epithelial cell lining the ventricular space with the peripherally positioned pia mater.
Ependyma
Thin, web-like connective tissue layer
Telo choroidea
It is contained withinn the delicate tissue projecting into the ventricular system as extensive poles.
Vascular plexus
Round to oval structure surrounded by meninges. Divided into: grey matter and white matter
Spinal cord
Forming H or butterfly shape consisting of nerve cell bodies,
neuroglia, unmyelnted fibers &
some myelinated.
Grey matter (spinal cord)
The area outside the H or butterfly shape consisting of primarily
myelinated fibers, also unmyetd fibers, glial cells and blood vessels ; areas include the dorsal funiculus occupies the region betwn DC, lateral funiculus
betwn adjacent DC & VC,ventral
funiculus betwn VC
White matter (spinal cord)
Composed of small
neurons and unmyelinated fibers
Outer molecular layer of cerebellum (grey matter)
The large pyramidal cell
Middle purkinje layer of cerebellum (grey matter)
It is consist of small &
tightly packed cell
Inner glanular layer of cerebellum (grey matter)
It is composed of myelinated fibers is surrounded by the grey matter
White matter (cerebellum)
It is composed of myelinated axons
White matter
It is composed of cell bodies, dendrites and neuroglia
Grey matter
o comprise the nerve trunks (cranial & spinal nerves), ganglia and nerve endings)
Peripheral nervous system
It includes neuron that carry information from external environment to the CNS and back to skeletal muscle
Somatic nervous system
It includes neurons that carry information from the external environment to the CNS and back to skeletal muscle, but the evocation of response involves the visceral organs
Automatic nervous system
