Portage Learning Anatomy & Physiology 2: Module 2 Exam

Portage Learning Anatomy & Physiology 2: Module 2 Exam This layer of the meninges is tightly attached to the brain. Pia mater (menix) The _______ fissure separates the right and left cerebral hemispheres. Median longitudinal What is the purpose of the blood-brain barrier? Describe its maintenance from a cellular level. The blood-brain barrier is a diffusion barrier which prevents most particles from entering the central nervous system tissue, keeping the brain and spinal cord separate from general blood circulation. The blood-brain barrier is formed by the relatively impermeable brain capillaries, due to the glial cells astrocytes. Maintenance of the blood-brain-barrier is important to provide a stable chemical environment for the nervous system. All the following are functions of the hypothalamus except: A. Maintain homeostasis B. Controls the pituitary gland C. Links the nervous and endocrine systems D. Correct! Relays sensory impulses to the cerebrum What is the largest portion of the brain? A. Cerebellum B. Correct! Cerebrum C. Corpus collosum D. Cingulate gyrus