Nervous System
... he has the animal passions of a strong man. Previous to his injury, although untrained in the schools, he possessed a well-balanced mind, and was looked upon by those who knew him as a shrewd, smart businessman, very energetic and persistent in executing all his plans of operation. In this regard hi ...
... he has the animal passions of a strong man. Previous to his injury, although untrained in the schools, he possessed a well-balanced mind, and was looked upon by those who knew him as a shrewd, smart businessman, very energetic and persistent in executing all his plans of operation. In this regard hi ...
Neurons & the Nervous System
... • Cell body (soma): contains nucleus • Axon: long tail-like end of neuron which transmits (sends) messages ...
... • Cell body (soma): contains nucleus • Axon: long tail-like end of neuron which transmits (sends) messages ...
Chapter 13: The Nervous System
... The synapse is a small space between neurons or between neurons and effectors. This space contains small vesicles containing transmitter chemicals. Chemicals are released from end plates as nerve impulses move along the axon. Transmitter chemicals are released from presynaptic neuron and diff ...
... The synapse is a small space between neurons or between neurons and effectors. This space contains small vesicles containing transmitter chemicals. Chemicals are released from end plates as nerve impulses move along the axon. Transmitter chemicals are released from presynaptic neuron and diff ...
LEVELS OF ORGANIZATION
... functions, the more personal you can make the information, the more you will enjoy it. So observe the way your body responds when you run or eat or hold your breath and try to figure out what’s going on. Two favorite questions can help to guide your logic: “Does this make sense?” ...
... functions, the more personal you can make the information, the more you will enjoy it. So observe the way your body responds when you run or eat or hold your breath and try to figure out what’s going on. Two favorite questions can help to guide your logic: “Does this make sense?” ...
HUMAN PHYSIOLOGY
... Acetylcholine as a Neurotransmitter I. There are two different subtypes of ACh receptors: nicotinic and muscarinic. A. Nicotinic receptors enclose membrane channels and open when ACh bonds to the receptor. This causes a depolarization called an excitatory postsynaptic potential (EPSP) in skeletal mu ...
... Acetylcholine as a Neurotransmitter I. There are two different subtypes of ACh receptors: nicotinic and muscarinic. A. Nicotinic receptors enclose membrane channels and open when ACh bonds to the receptor. This causes a depolarization called an excitatory postsynaptic potential (EPSP) in skeletal mu ...
Mammalian Physiology Sensory Nervous System
... The horizontal bars represent the minimum distance at which two points can be perceived as distinct at various locations over the body Spatial discrimination depends on -Receptive field size -Density of the receptors The higher the density of receptors, the finer the discrimination ...
... The horizontal bars represent the minimum distance at which two points can be perceived as distinct at various locations over the body Spatial discrimination depends on -Receptive field size -Density of the receptors The higher the density of receptors, the finer the discrimination ...
02QUIZ02 ( 44K)
... Broca's area. It is likely that Miguel will have difficulty: A) remembering past events. B) speaking fluently. C) reading. D) understanding other people when they speak. ...
... Broca's area. It is likely that Miguel will have difficulty: A) remembering past events. B) speaking fluently. C) reading. D) understanding other people when they speak. ...
neuron
... through the cell membrane • If resting potential rises above threshold, an action potential starts to travel from the cell body down the axon – Threshold - Each neuron receives excitatory and inhibitory signals from many neurons. When the excitatory signals minus the inhibitory signals exceed a mini ...
... through the cell membrane • If resting potential rises above threshold, an action potential starts to travel from the cell body down the axon – Threshold - Each neuron receives excitatory and inhibitory signals from many neurons. When the excitatory signals minus the inhibitory signals exceed a mini ...
Neuroanatomy
... • A neuron has a pre-set level of stimulation that needs to be met or exceeded in order for it to pass the received impulses on to the next neuron. This is called a neuron’s threshold. ...
... • A neuron has a pre-set level of stimulation that needs to be met or exceeded in order for it to pass the received impulses on to the next neuron. This is called a neuron’s threshold. ...
Slide 1
... • A neuron has a pre-set level of stimulation that needs to be met or exceeded in order for it to pass the received impulses on to the next neuron. This is called a neuron’s threshold. ...
... • A neuron has a pre-set level of stimulation that needs to be met or exceeded in order for it to pass the received impulses on to the next neuron. This is called a neuron’s threshold. ...
The nervous system
... tendency to diffuse outside the nerve cells Highly concentrated sodium ions outside the nerve cell tend to diffuse into the nerve cell As potassium diffuses out of the neuron, sodium diffuses into the neuron Positively charged ions move both into and out of the cell The diffusion is not equal and th ...
... tendency to diffuse outside the nerve cells Highly concentrated sodium ions outside the nerve cell tend to diffuse into the nerve cell As potassium diffuses out of the neuron, sodium diffuses into the neuron Positively charged ions move both into and out of the cell The diffusion is not equal and th ...
Neurons and Glia Three basic neurons: ∼ Multipolar: Neurons by
... Autapse: Neuron synapses on itself; a negative feedback mechanism. ...
... Autapse: Neuron synapses on itself; a negative feedback mechanism. ...
Nervous System
... (b–d) In axons with a myelin sheath, ions flow across the neural membrane at nodes, or small gaps between the cells that make up the sheath. Many gated channels for sodium ions are exposed to extracellular fluid at the nodes. When excitation caused by an action potential reaches a node, the gates o ...
... (b–d) In axons with a myelin sheath, ions flow across the neural membrane at nodes, or small gaps between the cells that make up the sheath. Many gated channels for sodium ions are exposed to extracellular fluid at the nodes. When excitation caused by an action potential reaches a node, the gates o ...
Neurotransmitter proteins
... • Defined: Gap between neurons • Problem: Impulse cannot cross the gap • Solution: Neurotransmitter proteins sent from one cell to another • Steps: – Impulse reaches neuron’s terminal (end) – Vesicle releases neurotransmitters, which attach to receptors on neighbor – New impulse created ...
... • Defined: Gap between neurons • Problem: Impulse cannot cross the gap • Solution: Neurotransmitter proteins sent from one cell to another • Steps: – Impulse reaches neuron’s terminal (end) – Vesicle releases neurotransmitters, which attach to receptors on neighbor – New impulse created ...
Muscle and NerveKD13
... Neuron Structure There are gaps in the myelin sheath, called nodes, where the membrane is exposed. • Impulses jump from one node to the next. ...
... Neuron Structure There are gaps in the myelin sheath, called nodes, where the membrane is exposed. • Impulses jump from one node to the next. ...
File
... Neuron Structure There are gaps in the myelin sheath, called nodes, where the membrane is exposed. • Impulses jump from one node to the next. ...
... Neuron Structure There are gaps in the myelin sheath, called nodes, where the membrane is exposed. • Impulses jump from one node to the next. ...
What is the cause of the changes in membrane potential during an
... How could one determine the velocity of an action potential? A. Attach a speedometer to the action potential. B. Measure how long it takes an action potential to travel a given distance. C. Measure the speed at which the action potential reaches its peak D. Measure the duration of the action poten ...
... How could one determine the velocity of an action potential? A. Attach a speedometer to the action potential. B. Measure how long it takes an action potential to travel a given distance. C. Measure the speed at which the action potential reaches its peak D. Measure the duration of the action poten ...
Neurons: Our Building Blocks
... -Neurons do not actually touch each other to pass on information. The gap between neurons is called the synapse. -The synapse acts as an electrical insulator, preventing an electrical charge from racing to the next cell. -To pass across the synaptic gap, or synaptic cleft, an electrical message must ...
... -Neurons do not actually touch each other to pass on information. The gap between neurons is called the synapse. -The synapse acts as an electrical insulator, preventing an electrical charge from racing to the next cell. -To pass across the synaptic gap, or synaptic cleft, an electrical message must ...
Autonomic Nervous System
... Specialized immune cells that act as the macrophages of the CNS Why is it important for the CNS to have its own army of immune cells? ...
... Specialized immune cells that act as the macrophages of the CNS Why is it important for the CNS to have its own army of immune cells? ...
Chapter 3 PowerPoint Outline
... Action Potential of a Neuron Neuron at resting state: slight negative charge (-70 mV) inside of cell o More negatively charged chloride ions inside cell o More positively charged sodium and potassium ions outside of cell Excitatory neurotransmitters received at dendrite receptor sites Causes c ...
... Action Potential of a Neuron Neuron at resting state: slight negative charge (-70 mV) inside of cell o More negatively charged chloride ions inside cell o More positively charged sodium and potassium ions outside of cell Excitatory neurotransmitters received at dendrite receptor sites Causes c ...
Somatosensory system
... Dorsal root ganglia - spinal nerve - limb and trunk Trigeminal ganglia - cranial nerve - head and face ...
... Dorsal root ganglia - spinal nerve - limb and trunk Trigeminal ganglia - cranial nerve - head and face ...
The Nervous System - OCPS TeacherPress
... Inactive until excited by stimulus (threshold = generator potential) ...
... Inactive until excited by stimulus (threshold = generator potential) ...
Nervous System
... impulses At resting potential the axon has negative voltage Action potential gated channels allow positive sodium ions to move freely into axon, voltage becomes positive. Myelinated axons: action potential concentrated at the nodes. ...
... impulses At resting potential the axon has negative voltage Action potential gated channels allow positive sodium ions to move freely into axon, voltage becomes positive. Myelinated axons: action potential concentrated at the nodes. ...
End-plate potential
End plate potentials (EPPs) are the depolarizations of skeletal muscle fibers caused by neurotransmitters binding to the postsynaptic membrane in the neuromuscular junction. They are called ""end plates"" because the postsynaptic terminals of muscle fibers have a large, saucer-like appearance. When an action potential reaches the axon terminal of a motor neuron, vesicles carrying neurotransmitters (mostly acetylcholine) are exocytosed and the contents are released into the neuromuscular junction. These neurotransmitters bind to receptors on the postsynaptic membrane and lead to its depolarization. In the absence of an action potential, acetylcholine vesicles spontaneously leak into the neuromuscular junction and cause very small depolarizations in the postsynaptic membrane. This small response (~0.5mV) is called a miniature end plate potential (MEPP) and is generated by one acetylcholine-containing vesicle. It represents the smallest possible depolarization which can be induced in a muscle.