Nervous System II Chapter 14 Flashcards
Both the spinal cord and the brain are protected by _____ and are wrapped in protective membranes known as _______.
bone
meniges
What are the two types of brain tissue
Gray and White
Consists of cell bodies and short, unmyelinated axons
Gray matter
Contains myelinated axons that run together in bundles called tracts
White matter
Interconnecting chambers that produce and serve as a reservoir for cerebrospinal fluid
Ventricles
Largest portion of the brain, divided into two hemispheres
Cerebrum
Extensive bridge of nerves that allow the two cerebral hemispheres to communicate
Corpus Callosum
Outer layer of gray matter that covers the hemispheres, accounts for sensation, voluntary movement and consciousness
Cerebral cortex
Receives and integrates visual, auditory and somatosensory information and sends it on the appropriate part of the cerebrum
Thalamus
Receives sensory input from the eyes, ears, joints and muscles to help maintain posture and balance
Cerebellum
Maintains homeostasis, regulates hunger, sleep, thirst, body temperature and water balance
Hypothalamus
Contains reflex centers from regulating heartbeat, breathing, blood pressure, vomiting, coughing, sneezing and swallowing.
Medulla Oblongata
has 12 pairs attached to the brain. Includes sensory and motor neurons concerned with head, neck, and facial regions
cranial nerves
31 pairs contains sensory and motor neurons
spinal nerves
The PNS carries its nerves into and from the ______
CNS
