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How is the Nervous System Organized? a Class Objectives a What
How is the Nervous System Organized? a Class Objectives a What

...  The Nervous System is the body’s main processing ______________________________________  This consists of structures and organs that facilitate _______________________________________________ communication in the body. - This is the body's electrochemical communication circuitry ...
2.2 Electrical Communication Study Guide by Hisrich
2.2 Electrical Communication Study Guide by Hisrich

... 2.2 Electrical Communication Study Guide by Hisrich 2.2.a How does communication happen within the body? Electrical Signals  Nervous System ...
Nerve Flash Cards
Nerve Flash Cards

... How does the signal go through the space? By a chemical transmission. The synaptic knob has vesicles filled with a neurotransmitter that carries the signal. Each type of neuron used particular types of neurotransmitters, so there are 100’s of types. ...
Neurons
Neurons

... approx. -70 mV = resting membrane potential ...
Chapter 4
Chapter 4

...  Frontal Lobe  Parietal Lobe  Occipital Lobe  Temporal Lobe  Brain Lateralization ...
Nervous System
Nervous System

... Takes place in the brain. ...
The Central Nervous System CNS
The Central Nervous System CNS

... • Sensory neurons (afferent neurons) conduct impulses from peripheral receptors to the CNS and are usually unipolar, although some are bipolar neurons. • Interneurons are multipolar neurons lying within the CNS that form links between other neurons. • Motor neurons (efferent neurons) are multipolar ...
Nerve cells - Dr Magrann
Nerve cells - Dr Magrann

... Controls autonomic (automatic) functions (blood pressure, digestion, etc). a. Sympathetic division b. Parasympathetic division Sensory (afferent) signals picked up by sensor receptors. They are carried by nerve fibers of PNS to the CNS Motor (efferent) signals are carried away from the CNS. They inn ...
Unit 8 Nervous System
Unit 8 Nervous System

...  Increases the probability of producing a nerve impulse ...
The Central Nervous System Dr. Ali Ebneshahidi
The Central Nervous System Dr. Ali Ebneshahidi

... 1. Body membranes that cover the brain and spinal cord for protection and nourishing purposes. 2. Consists of 3 layers: (each layer is a "menix") a) Dura mater ("tough mother"): outermost layer that attaches the brain to cranial bones, and the spinal cord to vertebrae. Made up of fibrous connective ...
Physiology Notes: The Central Nervous System
Physiology Notes: The Central Nervous System

... – Mass of ___________________ tissue located in the vertebral ___________________  – Extends from ___________________ Oblongata to 2nd ___________________ vertebrae   – Transmits electrical ___________________ to and from the ___________________, limbs, trunk,  and ___________________ of the body   ...
Lab 12
Lab 12

... cerebrum (p442-445) 1. left and right hemispheres _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 2. transverse fissure _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 3. longitudinal fissure _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ...
The Human Nervous System
The Human Nervous System

... that they send information. – Sensory (or afferent) neurons: send information from sensory receptors (e.g., in skin, eyes, nose, tongue, ears) TOWARD the central nervous system. – Motor (or efferent) neurons: send information AWAY from the central nervous system to muscles or glands. – Interneurons: ...
Developmental plasticity: Pruning
Developmental plasticity: Pruning

... partially by the process of synaptic pruning, together with trophic glial and vascular changes and or cell shrinkage. ...
Organization of the nervous system
Organization of the nervous system

... A Neuron is a very special cell: You have about 100 billion of them! •Cell body: Keeps the neuron alive and determines whether it will fire •Axon:Extending fiber that conducts impulses away from the cell body and transmits to other cells. ...
Reflexes
Reflexes

... b. Components: i. receptor, ii. sensory neuron, iii. integration center- generally within CNS; may involve simply a synapse (monosynaptic) or may involve interneurons (polysynaptic) iv. motor neuron v. effector c. Somatic reflexes involve skeletal muscle responses; when they occur, the cerebral cort ...
Peripheral Nervous System - e
Peripheral Nervous System - e

...  Originate in thoracic and lumbar regions of SC  Sympathetic ganglia run in chain alongside SC  Short preganglionic and long postganglionic ...
Nervous System Notes Outline
Nervous System Notes Outline

... Schwann cell – cells that wrap around __________ and coat it with _________ Nodes of Ranvier – __________ between myelin where _____________ occur Dendrites – branches from the cell body that ___________ info from other cells Synaptic knob – end of axon that releases __________________ Impulse ...
Nervous System
Nervous System

... Uses hormones that travel through the bloodstream. Takes longer to get there but lasts a long time ...
Nervous System
Nervous System

... • Neurons have ionic channels in the membrane that allows the membrane potential to change • How is the resting potential maintained in a neuron if there are ionic channels that allow for diffusion of ions? ...
Autonomic NS
Autonomic NS

... Draw a simple diagram to show the peripheral efferent neural pathway for the eye pupil response in this acutely stressful situation of encountering a bear. For each synapse along the pathway, name the neurotransmitter released and receptors for the neurotransmitter . CNS Æ ...
Central Nervous System (CNS)
Central Nervous System (CNS)

... receives all sensory impulses (except smell), and channels impulses to appropriate part of cerebral cortex for interpretation • Hypothalamus- Regulates autonomic activity involved in thermoregulation, hunger, thirst, sexual and mating behavior, etc… part of the limbic system (emotions) • The pituita ...
ppt - Le Moyne College
ppt - Le Moyne College

... things: surgically remove the tissue and/or use radiation to kill cancer cells. Why can’t brain tumors be treated like other cancers by using chemotherapy? • Does a brain tumor really involve brain tissue? • What kind of cells form the largest number found in the brain? ...
Chp 7 (part 1)
Chp 7 (part 1)

... 3. The remainder of the process acts as an axon. 4. The axon then sends impulses toward and away from the cell body 5. Found in sensory neurons in PNS ganglia 7. Physiology a. Neurons have 2 major functional Properties 1. Irritability: ability to respond to a stimulus 2. Conductivity: ability to tra ...
Topic Presentation: Biopsychology
Topic Presentation: Biopsychology

... 1. appetite, thirst 2. sexual behavior 3. temperature 4. motivation 5. communicates directed to the pituitary “master gland” of the endocrine system 6. pleasure centers 7. homeostasis (body’s internal balance or equilibrium) iv. Concept Check Cerebral Cortex – forms the outer layer of he brain (divi ...
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Circumventricular organs

Circumventricular organs (CVOs) are structures in the brain that are characterized by their extensive vasculature and lack of a normal blood brain barrier (BBB). The CVOs allow for the linkage between the central nervous system and peripheral blood flow; additionally they are an integral part of neuroendocrine function. The lack of a blood brain barrier allows the CVOs to act as an alternative route for peptides and hormones in the neural tissue to the peripheral blood stream, while still protecting it from toxic substances. CVOs can be classified into (a) sensory and (b) secretory organs. The sensory organs include the area postrema (AP), the subfornical organ (SFO) and the vascular organ of lamina terminalis. They have the ability to sense plasma molecules and then pass that information into other regions of the brain. Through this, they provide direct information to the autonomic nervous system from the systemic circulation. The secretory organs include the subcommissural organ (SCO), the posterior pituitary, the pineal gland, the median eminence and the intermediate lobe of the pituitary gland. These organs are responsible for secreting hormones and glycoproteins into the peripheral vascular system using feedback from both the brain environment and external stimuli.All of the circumventricular organs, besides the SCO, contain extensive vasculature and fenestrated capillaries which leads to a ‘leaky’ BBB at the site of the organs. Furthermore, all CVOs contain neural tissue, allowing them to play a role in the neuroendocrine system. It is highly debated if the choroid plexus can be included as a CVO. It has a high concentration of fenestrated capillaries, but its lack of neural tissue and its primary role of producing cerebrospinal fluid (CSF) usually excludes the choroid plexus from the CVO classification.Research has also linked CVOs to body fluid regulation, cardiovascular functions, immune responses, thirst, feeding behavior and reproductive behavior.
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