Brain
What is the largest part of the brain?
What is the cerebrum.
The spinal cord is continuous with the brainstem and exits from the cranial cavity through the
Spinal Nerves and Cranial Nerves are located
Where is Peripheral Nervous System
What is the eye's sensory nerve?
What is the optic nerve (I)
This is the physiologic barrier between blood capillaries and brain tissue?
What is the blood-brain barrier.
This barrier protects the brain from harmful agents, while allowing nutrients and gasses to enter.
The blood brain barrier affects drug penetration. Only some drugs can enter the CNS from the blood stream.
What is the primary functional unit of the nervous system?
What is the Neuron.
Cell body (nucleus, cytoplasm city), Axon (carries nerve impulses-hwy) and dendrites (links to other neurons).
3 Characteristics: 1) Excitability (generate), 2) Conductivity (transmit), 3) Ability to influence other neurons, muscle cells, or glandular cells.
Protects the spinal cord, supports the head, and provides flexibility
What is the Vertebral column.
33 individual vertebrae
- 7 cervical, 12 thoracic, 5 lumbar, 5 sacral (fused into 1), and 4 coccygeal (fused into 1).
Each vertebra has a central opening through which the spinal cord passes.
Involves Involuntary Responses to Internal Stimuli
What is Autonomic Nervous System.
Divided into the Sympathetic (SNS) and Parasympathetic (PNS)
The ANS governs involuntary functions of heart muscle, smooth muscle, and glands.
What are the three nerves that move the eyeball?
What are the oculomotor (III), the trochlear (IV), and the abducens (VI)?
What protects the brain from external trauma. It is composed of 8 cranial bones and 14 facial bones.
What is the skull.
Three parts of the Brain Stem
What is Midbrain, Pons, Medulla Oblongata.
An involuntary response to stimuli.
What is a reflex.
Components to this are Receptor organ, Afferent sensory neuron, Effector motor neuron, and effector organ (skeletal muscle). Ex patellar reflex.
What is the sensory nerve of the face and head?
What is the trigeminal nerve (V)?
The sense of touch is part of which division of the nervous system
What is Peripheral Nervous System (PNS)
This lobe helps with auditory data and contains Wernicke's area
What is the Temporal lobe.
Controls vomiting, cardiac function, respiration
What is Medulla Oblongata
What is the area of skin innervated by the sensory fibers of a single dorsal root of a spinal nerve?
What is a dermatome
What is the nerve that allows you to "smell the roses"?
What is the olfactory nerve (I)?
The cerebrum is composed of what 4 lobes?
What are Frontal, Temporal, Parietal, Occipital.
Communication of the Peripheral Nervous System is by way of
What is the Spinal Cord
What system plays a role with a "Fight or Flight" response
What is Sympathetic Nervous System (SNS)
What are the three nerves needed for tongue movement, for speech or swallowing?
What are the glossopharyngeal (IX), spinal accessory (XI) and hypoglossal (XII) nerves?
The 3 protective membranes that surround the brain and spinal cord
What is the Dura mater, Arachnoid layer, and Pia mater.
Dura mater: outermost layer
Arachnoid layer: fragile, web like membrane that lies btwn the dura mater and pia mater.
Pia mater: Vascular innermost layer of the meninges.