Chapter 12- Nervous System and Mental Health Flashcards
Central nervous system (CNS)
Brain and spinal cord
Brain
Part of the central nervous system contained within the cranium
Brainstem
Connects the brain to the spinal cord; assists in breathing, heart rhythm, vision, + consciousness
Pons
Part of the brainstem that connects different regions of the brain
Medulla oblongata
Part of the brainstem that connects the brain and the spinal cord; controls respiration and heartbeat
Midbrain, syn. mesencephalon
Part of the brainstem that connects the brainstem to the cerebellum; controls sensory processes
Cerebellum, syn. hindbrain
Posterior portion of the brain that coordinates voluntary muscles and maintains balance and muscle tone
Cerebrum
Largest and uppermost portion of the brain; divided into right and left halves (called cerebral hemispheres) and subdivided into lobes
Cerebral cortex
Outer layer of the cerebrum; controls higher mental functions
Frontal lobe
Front portion of the cerebrum that controls voluntary muscle movement and is involved in emotions
Gyrus
Raised convolution of the surface of the cerebrum
Occipital lobe
Back portion of the cerebrum that controls vision
Parietal lobe
Middle-top portion of the cerebrum involved in perception of touch, temperature, + pain
Sulcus
Groove or fissure on the surface of the brain
Temporal lobe
Portion of the cerebrum below the frontal lobe; controls senses of hearing and smell as well as memory, emotion, speech, + behavior
Diencephalon, syn. hypophysis
Area deep within the brain that contains the thalamus, hypothalamus, + pituitary gland; responsible for directing sensory information to the cortex
Cerebrospinal fluid (CSF)
Colorless fluid that circulates in and around the brain and spinal cord; acts as a protector and transports nutrients
Meninges
Membranous covering of the brain and spinal cord
Arachnoid
Delicate fibrous membrane forming the middle layer of the meninges
Dura mater
Strong fibrous outermost layer of the meninges
Pia mater
Thin inner layer o the meninges that attaches directly to the brain and spinal cord
Spinal cord
Portion of the central nervous system contained in the spinal or vertebral canal; responsible for nerve conduction to and from the brain and body
Ventricle
One of 4 interconnected cavities within the brain that secrete cerebrospinal fluid
Peripheral nervous system
Part of the nervous system external to the brain and spinal cord that consists of all other nerves throughout the body