| A | B |
|---|
| When potassium passes through opened channels in the neurolemma, does this result in the outside becoming positive or negative? | Negative |
| Over how much of the neurolemma do unmylenated fibers conduct impulses? | Across the entire neurolemma (cell membrane) |
| What are two cells that are involved in synapse transmission? | Presynaptic and postsynaptic neurons |
| What is dura matter? | It is the tough, connective tissue sheath; the periosteum of skull bones and within the vertebral cavity. |
| What are the two major components the diencephalon? | Thalamus and Hypothalamus |
| Nerve impulse conduction is an __ or __ response. | All or nothing |
| A covering material that contains a high proportion of lipid and gives color to the white matter in the brain. | Myelin |
| Based on its structure, what type of neuron has two precesses, one arising from either end of the cell body? | Bipolar neuron |
| What is the neuroglial cell found in the Central Nervous System that produces myelin? | Oligodendrocyte |
| What portion of what lobe of the brain deals with memory, reasoning, and emotion? | Anterior portion of the frontal lobe |
| What is the main function of the Hypothalamus? | To maintain homeostasis by regulating visceral activities |
| Name the involuntary component of the peripheral nervous system. | Autonomic Nervous System |
| What type of spinal tract carries information from the peripheral nervous system to the brain? | Ascending Tracts |
| Which cranial nerve has the specific function to report the sense of smell to the cerebrum? | Olfactory (I) |
| What are the functions of the myelin sheath in a Schwann cell? | Insulates neuron from neurons and increases speed of conduction |
| Neuron transmission is measured in what electrical charge? | millivolts (mV) |
| How many times is the Myelin sheath wrapped around the process (axon)? | 60 + or - |
| What are some examples of a reflex arc include muscles or glands. | knee jerk reflex, withdrawal reflex |
| Axons with Schwann cells transmit impulses faster due to what process? | Saltatory Conduction |
| Where does saltatory conduction involve the depolarization of the neurolemma? | Nodes of Ranvier |
| What is the ability to ignore unimportant stimuli called? | Sensory adaptation |
| What is the general term for chemicals used to bridge the synaptic cleft? | Neurotransmitters |
| What area of the brain is responsible for reflexes such as coughing, swallowing, sneezing, and vomiting? | Medulla oblongata |
