Anatomy 1: Lymphatic System, Bones and Nervous System Overview- Test 1 Flashcards
Efferent vessels
Carry lymph away from a node
Afferent vessels
Carry lymph to a lymph node
Where does the lymph reach the bloodstream?
At the root of the neck by large lymph vessels called right lymphatic duct and the thoracic duct
Central nervous system
Consists of the brain and spinal cord
Peripheral nervous system
Consists of 12 pairs of cranial nerves and 31 pairs of spinal nerves and associated ganglion
Somatic nervous system
Controls voluntary activities
Autonomic nervous system
Controls involuntary activities; breaks down into the sympathetic and parasympathetic nervous system
Gray matter
Consists of nerve cells embedded in neuroglia (specialized tissues)
White matter
Consists of nerve fibers (axons) embedded in neuroglia
Cauda equina
Verticals bundle of nerves that resemble a horses tail located at the roots of the lumbar and sacral nerves below the level of the termination of the cord
Anterior root of spinal nerve
Bundles of nerve fibers carrying nerve impulses away from the central nervous system and are efferent and attached to the spinal cord
Posterior root of spinal nerve
Bundles of nerve fibers that carry impulses to the central nervous system and are affront nerve fibers; attach to the spinal cord
Serous membrane
Line the cavities of the trunk and are reflected onto the mobile viscera lying within these cavities
Compact bone
Appears as a solid mass; dense bone
Cancellous
Consists if branching network of trabeculae which resists stress and strains to which the Bone is expressed