Categories: All - system - anatomy - sensory - nervous

by Christopher Tabet 1 year ago

101

Nervous System Anatomy

The human nervous system is divided into the peripheral and central nervous systems. The peripheral system includes the autonomic and somatic systems, with the autonomic further divided into sympathetic and parasympathetic branches responsible for '

Nervous System Anatomy

Nervous System Anatomy

Anatomical Directions

Ventral
Toward the stomach (bottom)
Dorsal
Toward the top
Lateral
Towards side (away from midline)
Medial
Toward midline
Posterior
Toward back
Anterior
Toward front

Human Nervous System

Peripheral Nervous System
Autonomic

Parasympathetic

System of nerves that facilitate vegetative, nonemergency responses by body's organs - rest and digest

Sympathetic

Network of nerves that prepare organs for vigorous activity - fight or flight

Somatic

Motor nerves

Sensory nerves

Central Nervous System
Spinal Cord
Brain

Mid Brain

Substantia Nigra

Pathway releasing dopamine

Tectum

Inferior Colliculus

Auditory processing

Superior Colliculus

Visual processing

Forebrain

Cerebrum

Occipital Lobe

Primary visual cortex

Vision

Temporal Lobe

Auditory, language processing

Parietal Lobe

Primary somatosensory cortex

Touch sensations, info on body position & spatial info

Frontal Lobe

PFC, precentral gyrus, primary motor cortex

Higher functioning thinking

Limbic System

Cingulate Gyrus

Amygdala

Evaluating emotional information

Hippocampus

Memory and learning

Hypothalamus

Motivated behaviours (hormone release via pituitary gland)

Olfactory bulb

Thalamus

Relay station from sensory organs to cortex

Hindbrain

Cerebellum

Regulates motor movement, balance, co-ordination and shifting attention

Pons

Bridges axons from each half of brain to opposite side

Medulla

Vital reflexes (breathing, coughing, heart rate)

Ventricles

Fluid filled cavities (cerebrospinal fluid)

Meninges

Pia Mater

Arachnoid

Dura Mater