Reflex Arc sensory afferent neuron receptor dendrites cell

Reflex Arc sensory (afferent) neuron receptor dendrites cell body interneuron effector motor (efferent) neuron axon node of Ranvier Nissl bodies ] axon hillock Schwann cell Multipolar Neuron axon terminals

Neuroglia Cells capillary neuron microglial cell axon astrocyte myelin sheath ependymal cells Schwann cell oligodendrocyte satellite cells unipolar neuron

central sulcus precentral (motor) gyrus postcentral (sensory) gyrus frontal lobe parietal lobe lateral sulcus occipital lobe temporal lobe Surface Brain transverse fissure cerebellum pons medulla oblongata spinal cord gyrus cerebral cortex (gray matter) sulcus white matter fissure

third ventricle corpus callosum fornix choroid plexus intermediate mass thalamus pineal gland corpora quadrigemina cerebral aqueduct hypothalamus pituitary gland arbor vitae fourth ventricle pons medulla oblongata spinal cord Midsagittal Brain cerebellum

posterior column white matter anterior column lateral column dorsal root ganglia spinal nerve dorsal root ventral root posterior median sulcus gray commissure posterior horn anterior horn lateral horn central canal anterior median fissure pia mater arachnoid mater dura mater Spinal Cord

Spinal Cord cervical nerves - 8 pairs cervical enlargement thoracic nerves - 12 pairs lumbar enlargement conus medullaris cauda equina lumbar nerves - 5 pairs filum terminale sacral nerves - 5 pairs coccygeal nerve - 1 pair

Cranial Nerves frontal lobe temporal lobe mammillary bodies infundibulum VII Facial VIII Vestibulocochlear IX Glossopharyngeal X Vagus XI Accessory XII Hypoglossal olfactory bulb I olfactory tract optic nerve optic chiasma optic tract III Oculomotor IV Trochlear V Trigeminal VI Abducens cerebellum medulla oblongata

Leg Nerves lumbar plexus Arm Nerves brachial plexus femoral nerve radial nerve sacral plexus sciatic nerve obturator nerve ulnar nerve median nerve tibial erve

superior oblique Nerve Anatomy superior rectus endoneurium lateral rectus cornea Axon Schwann cell perineurium optic nerve epineurium fascicle blood vessels inferior rectus inferior oblique Eye Anatomy

frontal lobe olfactory tract olfactory bulb nasal conchae cribriform plate olfactory nerve filaments route of inhaled air Olfactory Anatomy olfactory epithelium mucus olfactory receptor cell (bipolar neuron) supporting cell olfactory cilia route of inhaled air

Taste Bud taste fibers of cranial nerve gustatory hair taste pore circumvallate papillae gustatory receptor cell fungiform papillae taste bud Gustatory Structure supporting cell

sclera choroid coat retina macula lutea fovea centralis ciliary body suspensory ligaments cornea Iris pupil optic nerve anterior cavity aqueous humor lens optic disc posterior cavity/vitreous humor Internal Eye

external ear middle ear Inner ear malleus auditory ossicles semicircular canals ampullae vestibule incus stapes vestibular nerve cochlear nerve external auditory meatus cochlea tympanic membrane oval window round window Ear Structure Auditory (Eustachian) canal

tectorial membrane scala vestibuli cochlear duct receptors (hair cells) organ of Corti cochlear nerve basilar membrane scala tympani basilar membrane Cochlear Structure

Pineal gland Hypothalamus Pituitary Gland Thyroid gland Parathyroid glands Thymus Adrenal glands Pancreas Ovaries Testes Endocrine Glands