1. Which part of the nervous system is primarily responsible for integrating sensory information and responding accordingly? A. Central Nervous System (CNS) B. Peripheral Nervous System (PNS) C. Autonomic Nervous System (ANS) D. Somatic Nervous System (SNS) Answer: A. Central Nervous System (CNS) Rationale: The CNS is the main control center of the body; it processes information and creates responses that are delivered to the appropriate parts of the body. 2. What is the role of the optic nerve in the special senses? A. Transmits auditory signals to the brain B. Transmits visual signals from the retina to the brain C. Transmits olfactory signals to the brain D. Transmits gustatory signals to the brain Answer: B. Transmits visual signals from the retina to the brain Rationale: The optic nerve is part of the central nervous system and is responsible for transmitting visual information from the retina to the brain. 3. Which cells in the nervous system are responsible for the production of cerebrospinal fluid (CSF)? A. Neurons B. Oligodendrocytes C. Ependymal cells D. Astrocytes Answer: C. Ependymal cells Rationale: Ependymal cells line the ventricles of the brain and the central canal of the spinal cord, and they are involved in the production of CSF. 4. The loss of function in which cranial nerve would lead to anosmia, a loss of the sense of smell? A. Olfactory nerve (I) B. Optic nerve (II) C. Oculomotor nerve (III) D. Trochlear nerve (IV) Answer: A. Olfactory nerve (I)