Essentials of Human Anatomy Special Senses Special Senses
... Olfactory Nerve Pathways Once olfactory receptors are stimulated, nerve impulses travel through • olfactory nerves olfactory bulbs olfactory tracts limbic system (for emotions) and olfactory cortex (for interpretation) ...
... Olfactory Nerve Pathways Once olfactory receptors are stimulated, nerve impulses travel through • olfactory nerves olfactory bulbs olfactory tracts limbic system (for emotions) and olfactory cortex (for interpretation) ...
Vocabulary Terms
... All of the words below are ones that students will encounter while playing Episode Four: Mystery of Morpheus. Their definitions are contained within the adventure in either the InfoArchives or the Glossary. Teachers should alert the students to the ability to click on the hot-linked words in the gam ...
... All of the words below are ones that students will encounter while playing Episode Four: Mystery of Morpheus. Their definitions are contained within the adventure in either the InfoArchives or the Glossary. Teachers should alert the students to the ability to click on the hot-linked words in the gam ...
Smell (olfaction) and taste (gustation) Chemoreceptors respond to
... ~400 "smell" genes active only in nose Each encodes unique receptor protein Protein responds to one or more odors Each odor binds to several different receptors Each receptor has one type of receptor protein Pain and temperature receptors also in nasal cavities ...
... ~400 "smell" genes active only in nose Each encodes unique receptor protein Protein responds to one or more odors Each odor binds to several different receptors Each receptor has one type of receptor protein Pain and temperature receptors also in nasal cavities ...
Chapter 17: Nervous System - Johnston Community College
... Each type of drug has been found to either promote or prevent the action of a particular neurotransmitter. Medications that counter drug effects work by affecting the release, reception, or breakdown of dopamine, a neurotransmitter responsible for mood. ...
... Each type of drug has been found to either promote or prevent the action of a particular neurotransmitter. Medications that counter drug effects work by affecting the release, reception, or breakdown of dopamine, a neurotransmitter responsible for mood. ...
SYNAPTIC TRANSMISSION
... Synaptic transmission: Additional Information Neurotransmitters include: dopamine, acetylcholine and serotonin. These can all influence the post-synaptic neuron to respond in an inhibitory way (decreases the firing of a cell) or an excitatory way (increases the firing of a cell). Schizophrenia, ...
... Synaptic transmission: Additional Information Neurotransmitters include: dopamine, acetylcholine and serotonin. These can all influence the post-synaptic neuron to respond in an inhibitory way (decreases the firing of a cell) or an excitatory way (increases the firing of a cell). Schizophrenia, ...
Special Sense
... • Most are located on the tongue but are also found on the soft palate, larynx, and pharynx • There are three types of cells involved in taste ...
... • Most are located on the tongue but are also found on the soft palate, larynx, and pharynx • There are three types of cells involved in taste ...
The Mechanical Senses: Vestibular and Somatosensation
... SOMATOSENSATION: sensation of the body/skin Sensory Neuron (or “Sensory Receptor”) Types 1) Tactile: response to being touched (“light” and “deep” touch) Ruffini ending, Meissner’s corpuscle, Pacinian corpuscle The axons from these receptors are myelinated! 2) Pain: response to noxious stimulus 3) ...
... SOMATOSENSATION: sensation of the body/skin Sensory Neuron (or “Sensory Receptor”) Types 1) Tactile: response to being touched (“light” and “deep” touch) Ruffini ending, Meissner’s corpuscle, Pacinian corpuscle The axons from these receptors are myelinated! 2) Pain: response to noxious stimulus 3) ...
bio12_sm_11_1
... Schwann cells, which produce the myelin sheath, and the glial cells, which provide nutritional and structural support for neurons. They facilitate the transmission of nerve impulses via neurons but do not provide nerve transmission themselves. 4. Reflexes have evolved to occur without the need for t ...
... Schwann cells, which produce the myelin sheath, and the glial cells, which provide nutritional and structural support for neurons. They facilitate the transmission of nerve impulses via neurons but do not provide nerve transmission themselves. 4. Reflexes have evolved to occur without the need for t ...
Lecture 2
... Myelin sheath • Formed by Schwann cells in the PNS • A Schwann cell: - Envelopes an axon in a trough - Has concentric layers of membrane that make up the myelin sheath ...
... Myelin sheath • Formed by Schwann cells in the PNS • A Schwann cell: - Envelopes an axon in a trough - Has concentric layers of membrane that make up the myelin sheath ...
BCH 450 Nervous Tissues
... The brain of all vertebrates develops from three swellings at the anterior end of the neural canal of the embryo. From front to back these develop into the forebrain (also known as the prosencephalon) midbrain (mesencephalon) hindbrain (rhombencephalon) The brain receives nerve impulses from the spi ...
... The brain of all vertebrates develops from three swellings at the anterior end of the neural canal of the embryo. From front to back these develop into the forebrain (also known as the prosencephalon) midbrain (mesencephalon) hindbrain (rhombencephalon) The brain receives nerve impulses from the spi ...
SI October 7, 2008
... Typically generated in the soma and dendrites, which are rich in chemically gated ion channels that can be activated by synapses with other neurons. (from slide #99 and table 12-2 in the text) 1) “The transmembrane potential is most affected at the site of stimulation and decreases with distance” 2) ...
... Typically generated in the soma and dendrites, which are rich in chemically gated ion channels that can be activated by synapses with other neurons. (from slide #99 and table 12-2 in the text) 1) “The transmembrane potential is most affected at the site of stimulation and decreases with distance” 2) ...
Structure of the Nervous System
... • Fast axonal transport can move material at a rate of 400 mm/day. Moves material consumed rapidly, such as, synaptic vesicles. Ships back old membrane components for recycling to the cell body. ...
... • Fast axonal transport can move material at a rate of 400 mm/day. Moves material consumed rapidly, such as, synaptic vesicles. Ships back old membrane components for recycling to the cell body. ...
Chapter 12: Neural Tissue
... (myelinated) increases the speed of action potentials. - Myelinated segments of an axon are called internodes. The gaps between internodes, where axons may branch, are called nodes (nodes of Ranvier). - Because myelin is white, regions of the CNS that have many myelinated nerves are called white mat ...
... (myelinated) increases the speed of action potentials. - Myelinated segments of an axon are called internodes. The gaps between internodes, where axons may branch, are called nodes (nodes of Ranvier). - Because myelin is white, regions of the CNS that have many myelinated nerves are called white mat ...
Chapter 2
... Action potential: Nerve impulse caused by a reversal in the electrical charge across the axon (- to +) ...
... Action potential: Nerve impulse caused by a reversal in the electrical charge across the axon (- to +) ...
Lecture #13 – Animal Nervous Systems
... Especially important in rapid responses such as escape movements Also with controlling heart beat (but with specialized muscle tissue) ...
... Especially important in rapid responses such as escape movements Also with controlling heart beat (but with specialized muscle tissue) ...
Lecture #13 * Animal Nervous Systems
... Especially important in rapid responses such as escape movements Also with controlling heart beat (but with specialized muscle tissue) ...
... Especially important in rapid responses such as escape movements Also with controlling heart beat (but with specialized muscle tissue) ...
Topic: Nervous system Reading: Chapter 38 Main concepts
... • Chemicals in the air dissolve in the mucous in the nose, stimulating olfactory receptors located in a small area inside the nose. • There may be over 1000 different olfactory receptor proteins in in the receptors cells. • Pain • Damage to skin, blood vessels, and small nerves cause the release of ...
... • Chemicals in the air dissolve in the mucous in the nose, stimulating olfactory receptors located in a small area inside the nose. • There may be over 1000 different olfactory receptor proteins in in the receptors cells. • Pain • Damage to skin, blood vessels, and small nerves cause the release of ...
Neuroscience - HuskiesScience
... quickly regains its composure (hyperpolarize) • Active process in which sodium is removed from the cell • Sodium is exchanged for potassium • Requires metabolic activity • Returns charge inside cell to -70 mV • Refractory period-neuron cannot fire ...
... quickly regains its composure (hyperpolarize) • Active process in which sodium is removed from the cell • Sodium is exchanged for potassium • Requires metabolic activity • Returns charge inside cell to -70 mV • Refractory period-neuron cannot fire ...
nervous system - Zanichelli online per la scuola
... The peripheral nervous system contains different parts: • the somatic nervous system; • the autonomic nervous system. The autonomic nervous system is divided into: • sympathetic system; • parasympathetic system. ...
... The peripheral nervous system contains different parts: • the somatic nervous system; • the autonomic nervous system. The autonomic nervous system is divided into: • sympathetic system; • parasympathetic system. ...
Stimulus (physiology)
In physiology, a stimulus (plural stimuli) is a detectable change in the internal or external environment. The ability of an organism or organ to respond to external stimuli is called sensitivity. When a stimulus is applied to a sensory receptor, it normally elicits or influences a reflex via stimulus transduction. These sensory receptors can receive information from outside the body, as in touch receptors found in the skin or light receptors in the eye, as well as from inside the body, as in chemoreceptors and mechanorceptors. An internal stimulus is often the first component of a homeostatic control system. External stimuli are capable of producing systemic responses throughout the body, as in the fight-or-flight response. In order for a stimulus to be detected with high probability, its level must exceed the absolute threshold; if a signal does reach threshold, the information is transmitted to the central nervous system (CNS), where it is integrated and a decision on how to react is made. Although stimuli commonly cause the body to respond, it is the CNS that finally determines whether a signal causes a reaction or not.