Term
| Which system regulates, coordinates, and integrates muscular activity and function of all organs and all organ systems by responding to both internal and external stimuli? |
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Definition
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Term
| What are the two main components of the Central Nervous System (CNS)? |
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Definition
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Term
| What are the 3 main components of the Peripheral Nervous System (PNS)? |
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Definition
1. Cranial Nerves
2. Spinal Nerves
3. Ganglia |
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Term
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Definition
| A nerve is a collection of processes of individual cells called neurons, the structural and functional units that make up the nervous system. |
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Term
| Neurons are bundled together in groups, called a _____, when located within a peripheral nerve. |
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Definition
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Term
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Definition
| A bundle of axons located within a peripheral nerve. |
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Term
| What is the name of blood vessels that supply nerves? |
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Definition
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Term
| What is the name of the protective covering of a fascicle? |
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Definition
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Term
| What is the name of the protective covering of nerves in the PNS? |
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Definition
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Term
| Which cells form the myelin sheath? |
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Definition
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Term
| Which type of neuron can have a cell body in the brain, spinal cord, or ganglion? |
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Definition
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Term
| Which type of neuron contains axons and dendrites? |
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Definition
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Term
| Which type of neuron can have a cell body located in the brain or ganglion, but not the spinal cord? |
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Definition
| sensory (afferent) neurons |
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Term
| Which type of neuron has a single process to detect and transmit information to the CNS? |
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Definition
| sensory (afferent) neurons |
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Term
| The _____ of a sensory neuron, unlike motor neurons, is perpendicular to the length of the neuron and is uninvolved in the information sending process. |
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Definition
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Term
| Can a single peripheral nerve contain more than one type (motor or sensory) of neuron? |
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Definition
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Term
| What are large collections of cell bodies called? |
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Definition
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Term
| What are the two types of neurons in the peripheral nervous system and what are their function? |
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Definition
1. Motor (efferent): conduct information away from cell bodies to produce an effect on a muscle.
2. Sensory (afferent): conduct information towards CNS |
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Term
| What is the purpose of somatic nerves? |
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Definition
| Somatic nerves travel to skeletal muscle, skin, and serous membranes and control voluntary movements. Their sensory components respond to external stimuli and are called exteroreceptors. |
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Term
| Which type of nerve would contain exteroreceptors? |
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Definition
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Term
| What is the purpose of visceral nerves? |
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Definition
| They are distributed to organs; control involuntary movements of smooth muscle, cardiac muscle, and secretion from glands. Sensory components relay info from internal tissues/organs and are called interoreceptors. |
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Term
| What type of nerve would contain interoreceptors? |
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Definition
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Term
| What is the space within the spinal column in which the spinal cord is housed called? |
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Definition
| vertebral foramen (or vertebral canal) |
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Term
| What is the spinous process? |
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Definition
| A outcropping on the posterior (distal) side of a vertebrae |
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Term
| The ___ root of the spinal nerve contains sensory neurons. |
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Definition
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Term
| The ___ root of the spinal nerve contains motor (efferent) neurons. |
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Definition
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Term
| Which type of neurons would you expect to find in the dorsal root of the spinal nerve? |
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Definition
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Term
| Which type of neurons would you expect to find in the ventral root of the spinal nerve? |
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Definition
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Term
| What type of neurons would you expect to find in the ventral or dorsal rami of the spinal nerve? |
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Definition
dorsal: both sensory and motor
ventral: both sensory and motor |
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Term
| How many pairs of spinal nerves are there in total? |
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Definition
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Term
| How many spinal nerve pairs are located in the cervical region of the spinal column? |
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Definition
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Term
| How many pairs of spinal nerves are located in the thoracic region of the spinal column? |
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Definition
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Term
| How many pairs of spinal nerves are located in the lumbar region of the spinal column? |
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Definition
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Term
| How many pairs of spinal nerves are located in the sacral region of the spinal column? |
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Definition
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Term
| How many pairs of spinal nerves are located in the coccygeal region of the spinal column? |
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Definition
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Term
| Which is larger, the dorsal ramus or the ventral ramus of the spinal nerve? |
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Definition
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Term
| What is the name of the ganglion where all the cell bodies of the sensory neurons of the spinal nerve are located? |
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Definition
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Term
| What is the name of the ventral rami located within the thoracic region? |
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Definition
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Term
| Where are the intercostal nerves located? |
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Definition
| Intercostal nerves run along the ventral side of the body parallel to one another and next to the ribs |
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Term
| What are the large networks formed by the ventral rami located in the cervical, lumbar, and sacral regions called? |
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Definition
| plexi (eg. brachial plexus) |
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Term
| What muscles and tissue do the ventral rami supply? |
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Definition
1. The 3 layers of intercostal muscles.
2. Cutaneous branches of the intercostal nerves supply the skin for sensory input (pain, touch, temperature, and pressure). These nerves end in cutaneous termini. These sensory input nerves are also called exteroreceptors. |
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Term
| What are the geographically defined areas of skin supplied by the dorsal and ventral rami of the spinal nerves known as? |
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Definition
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Term
| The spinal nerves of C2-C5 supply a dermatome of which area? |
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Definition
| neck, shoulders, arms (except inner arm) |
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Term
| Which spinal nerves supply the neck, shoulders and arms (except inner arm) |
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Definition
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Term
| The spinal nerves of T1-T12 supply a dermatome of which area? |
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Definition
| Chest, abdomen, and upper back |
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Term
| Which spinal nerves supply the chest, abdomen, and upper back? |
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Definition
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Term
| The spinal nerves of L1-L5 supply a dermatome of which area? |
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Definition
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Term
| Which spinal nerves supply the dermatome containing the front of the legs and hips? |
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Definition
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Term
| The S1-S5 spinal nerves supply a dermatome containing which body parts? |
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Definition
| genitals, butt, back legs |
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Term
| Which spinal nerves supply the dermatome containing the genitals, butt, and back legs? |
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Definition
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