STRUCTURE AND FUNCTION OF THE NERVOUS SYSTEM
... cardiac muscle. Baroreceptors. Chemoreceptors. Ascending sensory pathways. ...
... cardiac muscle. Baroreceptors. Chemoreceptors. Ascending sensory pathways. ...
Membrane potential (mV)
... efferent neuron make up a basic circuit Circuits combine into networks that interconnect the peripheral and central nervous systems The Sensory, afferent, and efferent are the PNS The Interneurons are the CNS ...
... efferent neuron make up a basic circuit Circuits combine into networks that interconnect the peripheral and central nervous systems The Sensory, afferent, and efferent are the PNS The Interneurons are the CNS ...
Nervous & Endocrine Systems
... 6. Your brain interprets the impulses from many interneurons and you realize the phone is ringing. Your brain also decides that you should answer the phone. 4. Impulses travel along motor neurons to the muscles 3. Muscles in the arm carry out the response and you reach to pick up the phone ...
... 6. Your brain interprets the impulses from many interneurons and you realize the phone is ringing. Your brain also decides that you should answer the phone. 4. Impulses travel along motor neurons to the muscles 3. Muscles in the arm carry out the response and you reach to pick up the phone ...
Recording Action Potentials from Cockroach Mechanoreceptors
... the positive input of the voltage recording device (the "positive electrode") is placed just outside the neuron. The negative electrode is then placed either outside the same neuron at a distance or else anywhere in the fluid surrounding the neuron. Often recordings pick up less interference if the ...
... the positive input of the voltage recording device (the "positive electrode") is placed just outside the neuron. The negative electrode is then placed either outside the same neuron at a distance or else anywhere in the fluid surrounding the neuron. Often recordings pick up less interference if the ...
action potentials - Zanichelli online per la scuola
... Membrane potential is the electrical charge difference across the membrane. Resting potential is the steady state membrane potential of a neuron. Voltage (electric potential difference): force that causes charged particles to move between two points. The resting potential of an axon is –60 to –70 mi ...
... Membrane potential is the electrical charge difference across the membrane. Resting potential is the steady state membrane potential of a neuron. Voltage (electric potential difference): force that causes charged particles to move between two points. The resting potential of an axon is –60 to –70 mi ...
01Integrated Normal Cells of CNS
... Based on number of processes 2. Bipolar Neuron (spindle-shaped neuron): Has two processes (one arising from each pole of the cell body). One of them is the dendrite and the other is the axon, e.g. retina & olfactory epithelium. ...
... Based on number of processes 2. Bipolar Neuron (spindle-shaped neuron): Has two processes (one arising from each pole of the cell body). One of them is the dendrite and the other is the axon, e.g. retina & olfactory epithelium. ...
Non- directed synapses
... asymptomatic. The central nervous system, primarily the spinal cord, may be affected, leading to rapidly progressive paralysis, coarse FASCICULATION and hyporeflexia. Motor neurons are primarily affected. Encephalitis may also occur. The virus replicates in the nervous system, and may cause signific ...
... asymptomatic. The central nervous system, primarily the spinal cord, may be affected, leading to rapidly progressive paralysis, coarse FASCICULATION and hyporeflexia. Motor neurons are primarily affected. Encephalitis may also occur. The virus replicates in the nervous system, and may cause signific ...
Document
... Neurotransmitters are chemicals made by neurons and used by them to transmit signals to the other neurons A chemical message telling the next cell to fire or not to fire its own action potential More than 200 in our body all with different ...
... Neurotransmitters are chemicals made by neurons and used by them to transmit signals to the other neurons A chemical message telling the next cell to fire or not to fire its own action potential More than 200 in our body all with different ...
Review Senses and Nervous System Test
... Review Senses and Nervous System Test *(This is only an outline there is much more you should look over) CH 8 SENSES 1. What are the functions of the parts of eye? 2. What is blind spot, photoreceptors, rods, cones? 3. Read p 258, 262 4. What is colorblindness, cataracts, pink eye, glaucoma 5. What ...
... Review Senses and Nervous System Test *(This is only an outline there is much more you should look over) CH 8 SENSES 1. What are the functions of the parts of eye? 2. What is blind spot, photoreceptors, rods, cones? 3. Read p 258, 262 4. What is colorblindness, cataracts, pink eye, glaucoma 5. What ...
True or False: Write “True” or “False”
... organized topographically in the brain in the form of precise maps of the body’s sensory receptors, such as, the retina or the eye, the basilar membrane in the ear, or the skin on the body surface. These sensory maps are most easily understood by the representation of touch in the somatosensory cort ...
... organized topographically in the brain in the form of precise maps of the body’s sensory receptors, such as, the retina or the eye, the basilar membrane in the ear, or the skin on the body surface. These sensory maps are most easily understood by the representation of touch in the somatosensory cort ...
Outline14 Efferent NS
... axon terminals located at the neuromuscular junctions 2. Neuromuscular Junction 3 components: (1) axon terminal of motor neuron (2) synaptic cleft (3) motor end plate - axon terminals secrete ACh into the synaptic cleft nicotinic cholinergic receptors at the motor end plate binding of ACh open catio ...
... axon terminals located at the neuromuscular junctions 2. Neuromuscular Junction 3 components: (1) axon terminal of motor neuron (2) synaptic cleft (3) motor end plate - axon terminals secrete ACh into the synaptic cleft nicotinic cholinergic receptors at the motor end plate binding of ACh open catio ...
CH 3 Practice Test
... Johnny was awakened by a loud, crashing sound in the middle of the night. He was frightened and he jumped out of bed to investigate. Johnny realized that the loud sound was just his cat playing around in the living room. Needless to say, Johnny was extremely relieved. Which subdivision of the nervou ...
... Johnny was awakened by a loud, crashing sound in the middle of the night. He was frightened and he jumped out of bed to investigate. Johnny realized that the loud sound was just his cat playing around in the living room. Needless to say, Johnny was extremely relieved. Which subdivision of the nervou ...
Circulatory system
... • What is the name given to the maintenance of the body’s internal environment within certain tolerable limits despite changes in the body’s external environment? • Homeostasis ...
... • What is the name given to the maintenance of the body’s internal environment within certain tolerable limits despite changes in the body’s external environment? • Homeostasis ...
Nervous System
... Microglia- protect the nervous system by destroying invasive microorganisms and other materials that could harm the system Astrocytes - maintenance of the nervous system; absorb harmful chemicals in the environment (Ex. Potassium) Ependymal cells- line the central cavities of the brain and spinal co ...
... Microglia- protect the nervous system by destroying invasive microorganisms and other materials that could harm the system Astrocytes - maintenance of the nervous system; absorb harmful chemicals in the environment (Ex. Potassium) Ependymal cells- line the central cavities of the brain and spinal co ...
biology lecture notes chapter 2
... Some neurotransmitters excite the next cell into firing and some inhibit the next cell from firing. Specific neurotransmitters “bind” with specific POSTSYNAPTIC RECEPTORS. 1. “Lock and Key” model 2. Neurotransmitter—receptor binding causes postsynaptic changes 3. ION CHANNEL: closely “tied” to a r ...
... Some neurotransmitters excite the next cell into firing and some inhibit the next cell from firing. Specific neurotransmitters “bind” with specific POSTSYNAPTIC RECEPTORS. 1. “Lock and Key” model 2. Neurotransmitter—receptor binding causes postsynaptic changes 3. ION CHANNEL: closely “tied” to a r ...
Receptor potential
... 29.10 The human retina contains two types of photoreceptors: rods and cones When rhodopsin and photopsin absorb light, – they change chemically, and – the change alters the permeability of the cell’s membrane to ions – The resulting receptor potential triggers a change in the release of neurotran ...
... 29.10 The human retina contains two types of photoreceptors: rods and cones When rhodopsin and photopsin absorb light, – they change chemically, and – the change alters the permeability of the cell’s membrane to ions – The resulting receptor potential triggers a change in the release of neurotran ...
Keshara Senanayake Page # 1 -an individual nerve cells is called
... -The resting potential is based on a balance between chemical and electrical gradients, maintained by active transport and permeability of the membrane >ions of the cytoplasm is mainly (+) charged K+ and large (-) organic molecules [proteins] which cannot leave the cell >outside the cell, extracellu ...
... -The resting potential is based on a balance between chemical and electrical gradients, maintained by active transport and permeability of the membrane >ions of the cytoplasm is mainly (+) charged K+ and large (-) organic molecules [proteins] which cannot leave the cell >outside the cell, extracellu ...
APP Ch_3 Outline
... Action Potential – A very brief shift in a Neuron’s electrical charge that travels along an axon. Absolute Refractory Period – Minimum length of time after an action potential during which another action potential cannot begin. Only about 1 or 2 Milliseconds. All-Or-None Law – Neural Impulses ...
... Action Potential – A very brief shift in a Neuron’s electrical charge that travels along an axon. Absolute Refractory Period – Minimum length of time after an action potential during which another action potential cannot begin. Only about 1 or 2 Milliseconds. All-Or-None Law – Neural Impulses ...
PSYCHOLOGY (8th Edition) David Myers
... The sense of touch is a mix of four distinct skin senses—pressure, warmth, cold, and pain. ...
... The sense of touch is a mix of four distinct skin senses—pressure, warmth, cold, and pain. ...
B6 Brain and Mind revised - Blackpool Aspire Academy
... Drugs can have different effects on the nervous system. For example, alcohol _____ reactions down by affecting chemical transmitters in the brain whereas caffeine causes nerve impulses to be sent ______, thereby _______ reaction time. Serotonin is a neurotransmitter in the central nervous system tha ...
... Drugs can have different effects on the nervous system. For example, alcohol _____ reactions down by affecting chemical transmitters in the brain whereas caffeine causes nerve impulses to be sent ______, thereby _______ reaction time. Serotonin is a neurotransmitter in the central nervous system tha ...
Nervous System Chap49
... 41. Skin: It gives us information about Touch, Pressure, Heat, Cold and Pain. Most receptors in skin are present inside dermis just below epidermis. 42. Nose: It has special sensory cells which collect information about smells of vapors. 43. Tongue: It has groups of sensory cells called taste-buds. ...
... 41. Skin: It gives us information about Touch, Pressure, Heat, Cold and Pain. Most receptors in skin are present inside dermis just below epidermis. 42. Nose: It has special sensory cells which collect information about smells of vapors. 43. Tongue: It has groups of sensory cells called taste-buds. ...
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.