THE NERVOUS SYSTEM 9.1 Introduction
... 1. ___________________ - contains the nucleus and two extensions 2. ___________________ - shorter, more numerous, receive information 3. _________ - single, long fiber which conducts impulses away from the cell B. The nervous system is divided into two parts: 1. Central Nervous System (CNS) - brain ...
... 1. ___________________ - contains the nucleus and two extensions 2. ___________________ - shorter, more numerous, receive information 3. _________ - single, long fiber which conducts impulses away from the cell B. The nervous system is divided into two parts: 1. Central Nervous System (CNS) - brain ...
PNS - General
... severe head injury often damages one or more cranial nerves Spinal Nerves 31 pairs all are mixed nerves all but 1st pass through intervertebral foramina they are named and numbered according to the level of the vertebral column from which they arise: 8 cervical 12 thoracic 5 lumbar 5 sacral 1 coccyg ...
... severe head injury often damages one or more cranial nerves Spinal Nerves 31 pairs all are mixed nerves all but 1st pass through intervertebral foramina they are named and numbered according to the level of the vertebral column from which they arise: 8 cervical 12 thoracic 5 lumbar 5 sacral 1 coccyg ...
Neurology—midterm review
... *ascending nerve pathway terminology and general layout of sensory input from the body -a three neuron system from start to finish -first order neuron—body to spinal cord, a peripheral neuron -second order neuron—spinal cord to the thalamus -third order neuron—thalamus to gray matter of the brain -t ...
... *ascending nerve pathway terminology and general layout of sensory input from the body -a three neuron system from start to finish -first order neuron—body to spinal cord, a peripheral neuron -second order neuron—spinal cord to the thalamus -third order neuron—thalamus to gray matter of the brain -t ...
nerves and glials - Central Connecticut State University
... • Yes, but their path is blocked by CNS Glial Cells. • CNS Glial cells (Oligodendrocytes) form scar tissue. • Pathway is blocked by scar tissue. scar ...
... • Yes, but their path is blocked by CNS Glial Cells. • CNS Glial cells (Oligodendrocytes) form scar tissue. • Pathway is blocked by scar tissue. scar ...
Sensory Pathways (Ascending Tracts)
... pass directly to posterior white column Most of these axons ascend upward as bundles known as: 1. Fasciculus gracilis: present in all spinal cord segments Contain axons from sacral, lumbar and lower thoracic 2. Fasciculus cuneatus: Present in upper thoracic and all cervical segments ...
... pass directly to posterior white column Most of these axons ascend upward as bundles known as: 1. Fasciculus gracilis: present in all spinal cord segments Contain axons from sacral, lumbar and lower thoracic 2. Fasciculus cuneatus: Present in upper thoracic and all cervical segments ...
lecture 15 neurophysiology review (continued)
... neurons in the chain leading from the brain to an effector (skeletal muscle in this case). They are “common” in that all information getting to a given effector must cross these neurons. For this reason, any damage to this neuron in the pathway leads to a type of paralysis known as ‘flaccid paralysi ...
... neurons in the chain leading from the brain to an effector (skeletal muscle in this case). They are “common” in that all information getting to a given effector must cross these neurons. For this reason, any damage to this neuron in the pathway leads to a type of paralysis known as ‘flaccid paralysi ...
File
... Both left and right tracts are needed to innervate both the left and right sides of the body. Pathways are composed of a series of two or three neurons that work together. ...
... Both left and right tracts are needed to innervate both the left and right sides of the body. Pathways are composed of a series of two or three neurons that work together. ...
The Nervous System
... Central Nervous System (CNS) – consists of the brain and spinal cord Peripheral Nervous System (PNS) – consists of all nerves and ganglia that lie outside the CNS Central Nervous System (CNS) The central nervous system includes the brain and spinal cord. The brain and spinal cord are complex o ...
... Central Nervous System (CNS) – consists of the brain and spinal cord Peripheral Nervous System (PNS) – consists of all nerves and ganglia that lie outside the CNS Central Nervous System (CNS) The central nervous system includes the brain and spinal cord. The brain and spinal cord are complex o ...
BIO 141 Unit 5 Learning Objectives
... List the number of spinal nerves in relation to each anatomical subdivision. Describe the location and composition of the cauda equina. Define filum terminale, conus medullaris, cervical enlargement, and lumbosa ...
... List the number of spinal nerves in relation to each anatomical subdivision. Describe the location and composition of the cauda equina. Define filum terminale, conus medullaris, cervical enlargement, and lumbosa ...
Continuing Education Independent Study Series
... upright bars of the H are called horns. The white matter is divided into columns by the H gray matter. These columns contain ascending (sensory) tracts of fibers and descending (motor) tracts. Spinal cord ...
... upright bars of the H are called horns. The white matter is divided into columns by the H gray matter. These columns contain ascending (sensory) tracts of fibers and descending (motor) tracts. Spinal cord ...
Nervous System - s3.amazonaws.com
... Center of spinal cord – butterfly shaped Consists of cell bodies and interneurons 2 projections – dorsal horn (posterior horn) ...
... Center of spinal cord – butterfly shaped Consists of cell bodies and interneurons 2 projections – dorsal horn (posterior horn) ...
The Spinal Cord and Spinal Nerves
... The posterior root contains sensory axons and the anterior root contains motor axons; Therefore, the spinal nerve is a mixed nerve. ...
... The posterior root contains sensory axons and the anterior root contains motor axons; Therefore, the spinal nerve is a mixed nerve. ...
Document
... The problem is complicated by the reduced dimension of the support base (the feet)and by the articulated structure of the human skeleton. But surprisingly, upright posture is a capability, which is learnt in the first year of life. ...
... The problem is complicated by the reduced dimension of the support base (the feet)and by the articulated structure of the human skeleton. But surprisingly, upright posture is a capability, which is learnt in the first year of life. ...
neurotransmitters
... often integrate it with stored information. Motor output: If necessary, signal effector organs to make an appropriate response. ...
... often integrate it with stored information. Motor output: If necessary, signal effector organs to make an appropriate response. ...
CHAPTER 11: NERVOUS SYSTEM II: DIVISIONS OF THE
... Discuss the external structure of the spinal cord in terms of its length, start, end, number of segments, and enlarged areas. About 17 inches long, the start is the foramen magnum, it tapers to a point and terminates near the intervertebral disc that separates the first/ second lumbar vertebrae in a ...
... Discuss the external structure of the spinal cord in terms of its length, start, end, number of segments, and enlarged areas. About 17 inches long, the start is the foramen magnum, it tapers to a point and terminates near the intervertebral disc that separates the first/ second lumbar vertebrae in a ...
Cerebrospinal Fluid
... Cerebrospinal fluid (CSF) is a clear bodily fluid that occupies the subarachnoid space and the ventricular system around and inside the brain and spinal cord. The CSF occupies the space between the Arachnoid and the Pia . It constitutes the content of all intra-cerebral, cisterns, and Sulci as well ...
... Cerebrospinal fluid (CSF) is a clear bodily fluid that occupies the subarachnoid space and the ventricular system around and inside the brain and spinal cord. The CSF occupies the space between the Arachnoid and the Pia . It constitutes the content of all intra-cerebral, cisterns, and Sulci as well ...
Motor_lesions2009-04-18 00:3983 KB
... ○ In corona radiate: this leads to contralateral monoplegia or hemiplegia, depending on the extent of the lesion. ○ In the internal capsule: this often leads to contralateral hemiplegia because almost all fibers are injured. ○ In the brain stem: this leads to contralateral hemiplegia and ipsilateral ...
... ○ In corona radiate: this leads to contralateral monoplegia or hemiplegia, depending on the extent of the lesion. ○ In the internal capsule: this often leads to contralateral hemiplegia because almost all fibers are injured. ○ In the brain stem: this leads to contralateral hemiplegia and ipsilateral ...
the spinal cord and the influence of its damage on
... In spinal cord injury, the destruction of nerve fibres that carry motor signals from the brain to the torso and limbs leads to muscle paralysis. Destruction of sensory nerve fibres can lead to loss of sensations such as touch, pressure and temperature. Largely unknown is that the spinal cord control ...
... In spinal cord injury, the destruction of nerve fibres that carry motor signals from the brain to the torso and limbs leads to muscle paralysis. Destruction of sensory nerve fibres can lead to loss of sensations such as touch, pressure and temperature. Largely unknown is that the spinal cord control ...
Introduction to Neuroanatomy 1
... 2) Spinal and Brain stem nuclei have a longitudinal organization Nuclei; ganglia; tracts; nerves 3) Cerebral hemisphere nuclei, deep structures, and cortex have C-shapes Lateral ventricle Basal ganglia Hippocampal formation and fornix Development as a guide to learning regional neuroanatomy Neural t ...
... 2) Spinal and Brain stem nuclei have a longitudinal organization Nuclei; ganglia; tracts; nerves 3) Cerebral hemisphere nuclei, deep structures, and cortex have C-shapes Lateral ventricle Basal ganglia Hippocampal formation and fornix Development as a guide to learning regional neuroanatomy Neural t ...
Movement
... The cortex can regulate the activity of spinal neurons in direct and indirect ways: a) Pyramidal system: Consists mainly of axons from primary motor cortex and adjacent areas. These axons descend to the medulla where they decussate (cross over) in distinctive swellings called pyramids. The f ...
... The cortex can regulate the activity of spinal neurons in direct and indirect ways: a) Pyramidal system: Consists mainly of axons from primary motor cortex and adjacent areas. These axons descend to the medulla where they decussate (cross over) in distinctive swellings called pyramids. The f ...
Ativity 13 - PCC - Portland Community College
... • Filum terminale- a thin strand of pia mater that extends to the coccyx • Denticulate ligaments connect spinal cord along its entire length ...
... • Filum terminale- a thin strand of pia mater that extends to the coccyx • Denticulate ligaments connect spinal cord along its entire length ...
Information Processing The Central Nervous System Peripheral
... The Central Nervous System The central nervous system is divided into two major parts: the brain and the spinal cord. In the average adult human, the brain weighs 1.3 to 1.4 kg (about 3 pounds). The brain contains about 100 billion nerve cells (neurons) and trillons of "support cells" called glia. T ...
... The Central Nervous System The central nervous system is divided into two major parts: the brain and the spinal cord. In the average adult human, the brain weighs 1.3 to 1.4 kg (about 3 pounds). The brain contains about 100 billion nerve cells (neurons) and trillons of "support cells" called glia. T ...
Spinal cord
The spinal cord is a long, thin, tubular bundle of nervous tissue and support cells that extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column. The brain and spinal cord together make up the central nervous system (CNS). The spinal cord begins at the occipital bone and extends down to the space between the first and second lumbar vertebrae; it does not extend the entire length of the vertebral column. It is around 45 cm (18 in) in men and around 43 cm (17 in) long in women. Also, the spinal cord has a varying width, ranging from 13 mm (1⁄2 in) thick in the cervical and lumbar regions to 6.4 mm (1⁄4 in) thick in the thoracic area. The enclosing bony vertebral column protects the relatively shorter spinal cord. The spinal cord functions primarily in the transmission of neural signals between the brain and the rest of the body but also contains neural circuits that can independently control numerous reflexes and central pattern generators.The spinal cord has three major functions:as a conduit for motor information, which travels down the spinal cord, as a conduit for sensory information in the reverse direction, and finally as a center for coordinating certain reflexes.