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CNS Neurons Nerve Impulse PNS/ Autonomic Anything Goes 10 Point 10 Point 20 Points 20 Points 30 Points 30 Points 40 Points 40 Points 50 Points 50 Points

CNS refers to…?

Brain and Spinal Cord

Regulates body temperature, water balance and metabolism

Hypothalamus

Provides involuntary coorination of body movements, balance

cerebellum

What are three major parts of the brain stem?

Midbrain Pons Medulla oblongota

Primary motor area, sends impulses to skeletal muscle

Frontal Lobe

Gap between two communicating neurons a. Effector b. Schwann cell c. Synaptic cleft d. Node of Ranvier

Synaptic cleft

Schwann cell forms a myelin sheath around the: a. Axon b. Dendrites c. Cell body d. nucleus

axon

A neuron with a cell body located in the CNS whose primary function is connecting other neurons: a. Glial cell b. Afferent neuron c. Association neuron d. Efferent neuron

association

The neuron process that normally receive incoming stimuli are called: a. Neurolemmas b. Dendrites c. Satellite cells d. axons

dendrites

Collection of nerve bodies outside the CNS a. Nerves b. Ganglia c. tracts d. Tracts or ganglia

ganglia

Impulse conduction is fastest in neurons that are: a. Myelinated b. Unmyelinated c. Sensory d. motor

myelinated

Which of the following is the correct sequence in a typical reflex arc: a. Receptor, afferent neuron, efferent neuron, integration center, effector b. Receptor, efferent neuron, integration center, afferent neuron, effector c. Receptor, afferent neuron, integration center, efferent neuron, effector d. Effector, afferent neuron, integration center, efferent neuron, receptor

Receptor, afferent neuron, integration center, efferent neuron, effector

A substance that is released at axonal endings to propagate a nervous impulse

neurotransmitter

An action potential: a. Is initiated by potassium ion movements b. Is essential for nerve impulse propagation c. Involves the outflux of negative ions to depolarize the membrane d. Involves the influx of negative ions to depolarize the membrane

Is essential for nerve impulse propagation

Put the following in the correct order of what occurs following the threshold potential 1. Membrane becomes depolarized 2. Membrane becomes repolarized 3. Sodium channels open and sodium ions diffuse inward 4. Potassium channels open and potassium ions diffuse outward while sodium is actively transported out of the cell

1. Sodium channels open and sodium ions diffuse inward 2. Membrane becomes depolarized 3. Potassium channels open and potassium ions diffuse outward while sodium is actively transported out of the cell 4. Membrane becomes repolarized

The PNS includes: A. The brain and spinal cord B. Spinal nerves only C. Cranial nerves only D. Both spinal and cranial nerves

d. Spinal and cranial nerves

The sympathetic and parasympathetic nervous system are subdivisions of what?

Autonomic nervous system

Preparing body for “fight or flight” during threatening situations is the role of what subdivision of autonomic nervous system?

sympathetic

Which of these effectors is NOT directly controlled by the autonomic nervous system? a. Abdominal organs b. Most glands c. Cardiac muscle d. Skeletal muscle e. Smooth muscle

skeletal

Which of the following effects is characteristic of the parasympathetic nervous system? a. Decrease urine output b. Increase metabolic rate c. Decreases heart rate d. Decreases activity of the digestive system

Decrease heart rate

Afferent nerves are called ______, and motor nerves are called _______ a. Mixed nerves: motor nerves b. Motor nerves; sensory nerves c. Sensory nerves; efferent nerves d. Peripheral nerves; cranial nerves

Sensory; efferent

The elevated ridges of tissue on the surface of the cerebral hemishperes are known as ____ while the shallow grooves are termed _____ a. Ganglia; gyri b. Sulci; gyri c. Gyri; sulci d. Receptors; effectors

Gyri; sulci

Which one of the following is the correct sequence of nerves that exit the spinal cord, going from superior to inferior: a. Cervical spinal nerves, thoracic spinal nerves, lumbar spinal nerves, sacral spinal nerves b. Cervical spinal nerves, thoracic spinal nerves, sacral spinal nerves, lumbar spinal nerves c. Thoracic spinal nerves, cervical spinal nerves, lumbar spinal nerves, sacral spinal nerves d. Thoracic spinal nerves, cervical spinal nerves, sacral spinal nerves, lumbar spinal nerves

a. Cervical spinal nerves, thoracic spinal nerves, lumbar spinal nerves, sacral spinal nerves

Which of the following is a traumatic brain injury: a. CVA b. Parkinson’s disease c. Cerebral edema d. Alzheimer’s disease

Cerebral edema

The cerebrospinal fluid: a. Is secreted mostly by the ependymal cells lining the brain ventricles b. Enters the four ventricles after filling and circulating through the subarachnoid space c. Is continually formed mostly by the choroid plexuses d. Is identical in composition to whole blood

Is continually formed mostly by the choroid plexuses

Make your wager

Match the following 1. 2. 3. 4. 5. Optic Oculomotor Vagus Trigeminal Glossopharyngeal a. b. c. d. e. Allows you to chew food Allows you to taste food Motor fiber for eye Sensory nerve for vision Promotes digestive activity

1. 2. 3. 4. Optic- sensory for vision Oculomotor- motor fiber for eye muscle Vagus- promotes digestive activity Trigeminal- allows you to chew your food 5. Glossopharyngeal- allows you to taste your food