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Nervous System (Biomedical Science)
Transcript of Nervous System (Biomedical Science)
by Jhalen, Tiffany,
and DanDan Brain Cerebrum!!! Cerebellum - motor control Brain-Cerebrum
Special Senses Afferent Nerves and Efferent Nerves Neurons (Nerves) 31 Pairs of Spinal Nerves 4-100 micrometers - it is above the brain stem - a cortex layer with white mater Spark (cc) image by nuonsolarteam on Flickr - unfolded it is 1 meter Special Senses - carried in special somatic afferent Vision Hearing ~ ability to interpret your surroundings ~ ability to perceive sound ~ uses vibration ~ Process information containing visible light http://www.mult-sclerosis.org/cerebellum.html 18 inches in men
17 inches in female Spinal Cord 3 layers of protective tissue conduit for motor information conduit for sensory information conduit for coordinating reflexes brain +spinal cord=Central Nervous System 1. cell body 2. neuronal membrane 3. dendrites 4. axon 5. nerve ending The Brain!! stem Pons Midbrain between pons and spinal cord Responsible for breathing and heartrate Involved in motor control Involved in sensory analysis Rostral Part of Brain stem Involves function from vision and hearing Involves function from eyemovement, and body movement http://www.cerebromente.org.br/n07/fundamentos/neuron/parts_i.htm http://faculty.washington.edu/chudler/spinal.html http://science.howstuffworks.com/environmental/life/human-biology/eye1.htm healthyhearing.com network of cells, organs, and tissues The Nervous System regulates response to internal/external stimuli cardiovascular system The Nervous System and Its Interactions with others brain regulates heart rate blood pressure endocrine system reproductive hormones affect development of NS hormones affect neural processing Respiratory System brain regulates respiratory rate monitors respiratory volume Caudal-most part of the brain stem ~ Nerves send signal to spinal cord The organs in the Nervous System ~ From spinal cord to cerebrum ~ From cerebrum to brain Divided into 4 sections Frontal Lobe
Reasoning, planning, parts of speech, and problem solving Parietal Lobe
Movement orientation, recognition, perception of stimuli http://www.brainpop.com/health/bodysystems/nervoussystem/ Occipital Lobe
Visual processing Temporal Lobe
Memory, Speech, and recognition of auditory stimuli Highly Wrinkled (cortical folding) to increase surface area
makes brain more efficient ~ the brain send it to the right place Indention divides cerebrum into two hemispheres,
Each side functions differently, Right-creativity Left- Logic
Corpus Callosum- bundle of axons, that connect the two. http://upload.wikimedia.org/wikipedia/commons/b/ba/Nervous_system_diagram.png Nerve cells make up gray surface around cerebrum
About as thick as your thumb http://serendip.brynmawr.edu/bb/kinser/definitions/def-midbrain.html http://serendip.brynmawr.edu/bb/kinser/definitions/def-pons.html http://serendip.brynmawr.edu/bb/kinser/definitions/def-medulla.html http://serendip.brynmawr.edu/bb/kinser/images/humanlobes.gif Spine Brain stem
Function-Basic Vital Life (breathing,heartbeat, blood pressure
Structure-Tube-like shape, located directly under Cerebrum and Cerebellum Cerebellum
Size- Very thin, but if unfolded, it would be about 1 meter and 10 cm
Function- Fine movement, coordination,balance, equilibrium, and muscle tone
Structure- layer of cortex with white matter underneath, between Cerebrum and brain stem Brain Cerebrum
Size- Largest part of human brain
Function- Thought and action
Structure- Located under the skull and above Cerebellum, the bulk of the brain Special Senses Brain Structure, Function and Size of Nervous System Size- Carried in Small afferent nerves (Somatic, Visceral)
Function- Completes the process of vision, touch, sound, taste, and smell
Structure- small fibers throughout body Spinal Cord
Size- 18 in. (Men) 17 in. (women)
Function-Conduit for motor and sensory information
Structure- Extends from bottom of brain stem to lower back, long tube protected by spine
Size- Small bundles of neurons
Function- Send signal waves back and forth from brain
Structure- Cylinder shape, located throughout body Citations "Brain Structures and Their Functions." Brain Structures and Their Functions. Ed. Bryn Mawr College. Serendip, 3 June 2005. Web. 29 Aug. 2012. <http://serendip.brynmawr.edu/bb/kinser/Structure1.html>.