Ch 15 Chemical Senses
... sensations (such as burning of hot peppers) • Odor stimuli from food in the mouth reaches the olfactory mucosa through the retronasal route • The taste of most compounds is influenced by olfaction, but a few, such as MSG are not ...
... sensations (such as burning of hot peppers) • Odor stimuli from food in the mouth reaches the olfactory mucosa through the retronasal route • The taste of most compounds is influenced by olfaction, but a few, such as MSG are not ...
Pathophysiology of Epilepsy
... nonepileptic tissue Epileptic seizures occurring in chronically epileptic tissue Epileptogenesis: sequence of events that converts normal neuronal networks into ...
... nonepileptic tissue Epileptic seizures occurring in chronically epileptic tissue Epileptogenesis: sequence of events that converts normal neuronal networks into ...
PowerPoint Presentation - Synapses and Electroconvulsive
... Some neurotransmitters • You may have noticed that some of the neurotransmitters, like norepinephrine can be both excitatory or inhibitory. this depends on: – The type of receptors on the post synaptic cell – How the receptors actually work • some receptors directly open an ion channel (like Acetyl ...
... Some neurotransmitters • You may have noticed that some of the neurotransmitters, like norepinephrine can be both excitatory or inhibitory. this depends on: – The type of receptors on the post synaptic cell – How the receptors actually work • some receptors directly open an ion channel (like Acetyl ...
Ch 31: Urinary System
... Transmission of Electrical Impulse Between Neurons: - Electrical signal reaches end of axon - Neurotransmitters are released from synaptic terminals ...
... Transmission of Electrical Impulse Between Neurons: - Electrical signal reaches end of axon - Neurotransmitters are released from synaptic terminals ...
Cardiovascular system
... 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 ...
4/7
... Neurons are commonly connected to many other neurons, and the effect of the different incoming signals determines what the neuron will do. ...
... Neurons are commonly connected to many other neurons, and the effect of the different incoming signals determines what the neuron will do. ...
Electroconvulsive therapy - a shocking topic
... Some neurotransmitters • You may have noticed that some of the neurotransmitters, like norepinephrine can be both excitatory or inhibitory. this depends on: – The type of receptors on the post synaptic cell – How the receptors actually work • some receptors directly open an ion channel (like Acetyl ...
... Some neurotransmitters • You may have noticed that some of the neurotransmitters, like norepinephrine can be both excitatory or inhibitory. this depends on: – The type of receptors on the post synaptic cell – How the receptors actually work • some receptors directly open an ion channel (like Acetyl ...
here
... pancreas to stimulate liver cells to convert glycogen to glucose, and amino acids to glucose. Insulin secretion at high glucose levels to stimulate cell respiration, increased absorption of glucose by muscle cells, conversion of glucose to fat and to glycogen. The concept of negative feedback. Aware ...
... pancreas to stimulate liver cells to convert glycogen to glucose, and amino acids to glucose. Insulin secretion at high glucose levels to stimulate cell respiration, increased absorption of glucose by muscle cells, conversion of glucose to fat and to glycogen. The concept of negative feedback. Aware ...
Nervous tissue Nervous system
... neurons show the greatest variation in size and shape of any group of cells in the body, they can be grouped into three general categories. • Sensory neurons convey impulses from receptors to the CNS. Processes of these neurons are included in somatic afferent and visceral afferent nerve fibers. Som ...
... neurons show the greatest variation in size and shape of any group of cells in the body, they can be grouped into three general categories. • Sensory neurons convey impulses from receptors to the CNS. Processes of these neurons are included in somatic afferent and visceral afferent nerve fibers. Som ...
Final Exam - Creighton Biology
... ii. All of the above would have an inhibitory effect. A phasic sensory receptor is one that jj. doesn’t show a change in action potential frequency as long as stimulus intensity stays constant. kk. shows a strong increase in action potential frequency while stimulus intensity is changing, but a low ...
... ii. All of the above would have an inhibitory effect. A phasic sensory receptor is one that jj. doesn’t show a change in action potential frequency as long as stimulus intensity stays constant. kk. shows a strong increase in action potential frequency while stimulus intensity is changing, but a low ...
Document
... • Myelin insulates and blocks current across membrane • Depolarization occurs at Nodes of Ranvier • Current “jumps” from node to node • Faster and more energy efficient Tuesday, November 4, 14 ...
... • Myelin insulates and blocks current across membrane • Depolarization occurs at Nodes of Ranvier • Current “jumps” from node to node • Faster and more energy efficient Tuesday, November 4, 14 ...
Neurobiology
... understand how and why an immensity of things and processes work, including those of our own brain. At the start of the twenty-first century neuroscientists are increasingly able to explain the functions of brain in molecular terms. To understand how the brain works we first must consider what the b ...
... understand how and why an immensity of things and processes work, including those of our own brain. At the start of the twenty-first century neuroscientists are increasingly able to explain the functions of brain in molecular terms. To understand how the brain works we first must consider what the b ...
The Nervous System
... cochlea, deep inside the ear. The vibrations pass as ripples into the fluid inside the cochlea. Here, they shake thousands of tiny hairs that stick into the fluid from hair cells. As the hairs shake, the hair cells make nerve signals, which go along the auditory nerve to the hearing center of the br ...
... cochlea, deep inside the ear. The vibrations pass as ripples into the fluid inside the cochlea. Here, they shake thousands of tiny hairs that stick into the fluid from hair cells. As the hairs shake, the hair cells make nerve signals, which go along the auditory nerve to the hearing center of the br ...
HOMEWORK 1 SOME BASIC TERMS CNS / PNS
... A sequence of depolarization that moves along an axon, resulting in the all-or-nothing release of NT Section of axon where depolarization sequence begins A greater or lesser change in the polarity of a neuron that results in a greater or lesser release of NT Propagation of info down an axon by way o ...
... A sequence of depolarization that moves along an axon, resulting in the all-or-nothing release of NT Section of axon where depolarization sequence begins A greater or lesser change in the polarity of a neuron that results in a greater or lesser release of NT Propagation of info down an axon by way o ...
ANNB/Biology 261 Exam 1
... e) There are no exceptions; all of the above are correct * 16. Enough positive current is injected into a neuron to depolarize the membrane to threshold. Which of the following would occur? a) Voltage-gated K+ channels would open, K+ ions would flow into the cell down their electrochemical gradient, ...
... e) There are no exceptions; all of the above are correct * 16. Enough positive current is injected into a neuron to depolarize the membrane to threshold. Which of the following would occur? a) Voltage-gated K+ channels would open, K+ ions would flow into the cell down their electrochemical gradient, ...
Reflex Arc - Point Loma High School
... The sensory neurons pass through the spinal cord which allows reflex actions to occur relatively quickly by activating spinal motor neurons without the delay of steering signals through the brain, although the brain will receive sensory input while the reflex action occurs. ...
... The sensory neurons pass through the spinal cord which allows reflex actions to occur relatively quickly by activating spinal motor neurons without the delay of steering signals through the brain, although the brain will receive sensory input while the reflex action occurs. ...
Introduction to Autonomic Pharmacology
... Stimulation of contraction via AP Acetylcholine degraded after action – ACETYLCHOLINESTERASE (AChE) ...
... Stimulation of contraction via AP Acetylcholine degraded after action – ACETYLCHOLINESTERASE (AChE) ...
Nervous System
... • The electrical impulse travels from the stimulated receptor cell to an effector cell (muscle and/or gland) • A change in the membrane potential of the effector cell causes a functional change in the cell allowing for an appropriate response – the salivary glands will secrete saliva into the mouth ...
... • The electrical impulse travels from the stimulated receptor cell to an effector cell (muscle and/or gland) • A change in the membrane potential of the effector cell causes a functional change in the cell allowing for an appropriate response – the salivary glands will secrete saliva into the mouth ...
-to supply oxygen to the body`s cells
... responses, while the parasympathetic nervous system governs _____?_____ responses. ...
... responses, while the parasympathetic nervous system governs _____?_____ responses. ...
3 Types of Muscle Tissue SKELETAL MUSCLE CARDIAC MUSCLE
... Found only in the heart Involuntary control Faint striations Uninucleated Branched cells Intercalated disks – junctions between cells ...
... Found only in the heart Involuntary control Faint striations Uninucleated Branched cells Intercalated disks – junctions between cells ...
![Nervous Tissue [PPT]](http://s1.studyres.com/store/data/000313628_1-63044c543d97a5d91f1cbdf37558ffd7-300x300.png)
Autonomic Nervous System
... specific enzyme (eg. adenylate cyclase or phospholipase C), which causes synthesis of second messenger ...
... specific enzyme (eg. adenylate cyclase or phospholipase C), which causes synthesis of second messenger ...
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.