Nervous System WS (handed out after section exam)
... The myelin sheath is responsible for saltatory conduction / transmission. This is where the electrical impulses jump from one node of Ranvier to the next node. This increases the speed of the nerve impulse. The speed increases because the myelin sheath acts as an insulator, preventing ion loss f ...
... The myelin sheath is responsible for saltatory conduction / transmission. This is where the electrical impulses jump from one node of Ranvier to the next node. This increases the speed of the nerve impulse. The speed increases because the myelin sheath acts as an insulator, preventing ion loss f ...
Senses
... Olfactory Nerve Pathways • When stimulated nerve impulses travel along their axons through tiny opening in the cribriformplates of the ethmoid bone • These fibers synapse with neurons located in the enlargements of the olfactory bulbs • Within the olfactory bulbs the sensory impulses are analyzed a ...
... Olfactory Nerve Pathways • When stimulated nerve impulses travel along their axons through tiny opening in the cribriformplates of the ethmoid bone • These fibers synapse with neurons located in the enlargements of the olfactory bulbs • Within the olfactory bulbs the sensory impulses are analyzed a ...
chapter 3 powerpoint
... Dendrites: Branching extensions at the cell body. Receive messages from other neurons. Axon: Long single extension of a neuron, covered with myelin sheath to insulate and speed up messages through neurons. Axon: Terminals: Branched endings of an axon that transmit messages to other neurons. Synapse: ...
... Dendrites: Branching extensions at the cell body. Receive messages from other neurons. Axon: Long single extension of a neuron, covered with myelin sheath to insulate and speed up messages through neurons. Axon: Terminals: Branched endings of an axon that transmit messages to other neurons. Synapse: ...
5.4 Muscle Tissues
... • Contain desmosomes (provide structural support) and gap junctions (allows rapid communication between cells, required for coordinated heart contraction). ...
... • Contain desmosomes (provide structural support) and gap junctions (allows rapid communication between cells, required for coordinated heart contraction). ...
Test 1 Objectives
... Know about intra and extracellular ion concentrations as well as equilibrium. ...
... Know about intra and extracellular ion concentrations as well as equilibrium. ...
Notes - The Nervous System
... – Messages come in from different stimuli and trigger electrical impulses. – At the end of the axon it is changed into a chemical message so it can cross over the synapse – neurotransmitters. ...
... – Messages come in from different stimuli and trigger electrical impulses. – At the end of the axon it is changed into a chemical message so it can cross over the synapse – neurotransmitters. ...
Chapter 8 Nervous System
... D. Local Potential – local area depolarization – can go one of 2 ways 1. If threshold is not met repolarization occurs 2. If threshold is met action potential occurs E. Action Potential – depolarization then repolarization of the entire cell in an all-ornone fashion – complete charge reversal across ...
... D. Local Potential – local area depolarization – can go one of 2 ways 1. If threshold is not met repolarization occurs 2. If threshold is met action potential occurs E. Action Potential – depolarization then repolarization of the entire cell in an all-ornone fashion – complete charge reversal across ...
Lecture CH18 chem131pikul partA
... transmits nerve impulses from one neuron to another. •The space between the two neurons is called a synapse. •The presynaptic neuron releases the neurotransmitter. ...
... transmits nerve impulses from one neuron to another. •The space between the two neurons is called a synapse. •The presynaptic neuron releases the neurotransmitter. ...
Neuromonitoring for Spine Surgery
... pathways from peripheral nerves to the sensory cortex. Disruption along any part of this pathway may disrupt normal SSEP responses. Anesthetic Implications. SSEPs are progressively suppressed by inhaled anesthetic (vapor or N2O) > 0.5 MAC. All intravenous agents (propofol, barbiturates, midazolam, o ...
... pathways from peripheral nerves to the sensory cortex. Disruption along any part of this pathway may disrupt normal SSEP responses. Anesthetic Implications. SSEPs are progressively suppressed by inhaled anesthetic (vapor or N2O) > 0.5 MAC. All intravenous agents (propofol, barbiturates, midazolam, o ...
Synaptogenesis
... other nuclei re-express the fetal subunit pattern of α2βγδ. Embryonic AChRs are found all over the surface of the myofiber, producing denervation supersensitivity. The adult form of the receptor is restricted to the end plate region. D: If denervated muscles are stimulated, the AChR pattern resemble ...
... other nuclei re-express the fetal subunit pattern of α2βγδ. Embryonic AChRs are found all over the surface of the myofiber, producing denervation supersensitivity. The adult form of the receptor is restricted to the end plate region. D: If denervated muscles are stimulated, the AChR pattern resemble ...
Release of neurotransmitters from glia
... that application of vocabulary and concepts developed for synaptic communication between neurons can lead to confusion and apparent paradoxes with respect to communication by extracellular signaling molecules released from glia in response to functional activity. Keywords: neurotransmitter release, ...
... that application of vocabulary and concepts developed for synaptic communication between neurons can lead to confusion and apparent paradoxes with respect to communication by extracellular signaling molecules released from glia in response to functional activity. Keywords: neurotransmitter release, ...
e.4.1 state that some presynaptic neurons excite post synaptic
... Cl- in, neuron _______________, more difficult to depolarize, impulse ____________. NT: e.g. _______, dopamine ...
... Cl- in, neuron _______________, more difficult to depolarize, impulse ____________. NT: e.g. _______, dopamine ...
Biology 3.5 Responding to Stimuli
... • Some neurotransmitters remaining in the synaptic cleft will be broken down by an enzyme – this is called inactivation • The remaining chemicals are reabsorbed into the presynaptic neuron and used again to make new neurotransmitters. ...
... • Some neurotransmitters remaining in the synaptic cleft will be broken down by an enzyme – this is called inactivation • The remaining chemicals are reabsorbed into the presynaptic neuron and used again to make new neurotransmitters. ...
Chapter 4 lec 2
... binding sites deep in ion channel •When channel is open both Na and Ca ions move inside the cell, causes depolarization •Ca also serves as 2nd messenger and activate enzymes important for learning and memory •Must also have glycine binding for channel to open •Also Mg ion must not be attached to Mg ...
... binding sites deep in ion channel •When channel is open both Na and Ca ions move inside the cell, causes depolarization •Ca also serves as 2nd messenger and activate enzymes important for learning and memory •Must also have glycine binding for channel to open •Also Mg ion must not be attached to Mg ...
Chapter 14 ()
... most cranial nerves contain the axons of both sensory and motor neurons the cell bodies of the sensory neurons are located in sensory organs in cranial sensory ganglia near the brain (comparable to dorsal root ganglia of spinal nerves) the cell bodies of motor neurons are located in gray matter (nuc ...
... most cranial nerves contain the axons of both sensory and motor neurons the cell bodies of the sensory neurons are located in sensory organs in cranial sensory ganglia near the brain (comparable to dorsal root ganglia of spinal nerves) the cell bodies of motor neurons are located in gray matter (nuc ...
Chapter 54: The Nervous System
... Are Pollutants Affecting the Sexual Development of Florida’s Alligators? Alligators are among the most interesting of animals for a biologist to study. Their ecology is closely tied to the environment, and their reptilian biology offers an interesting contrast to that of mammals like ourselves. Stud ...
... Are Pollutants Affecting the Sexual Development of Florida’s Alligators? Alligators are among the most interesting of animals for a biologist to study. Their ecology is closely tied to the environment, and their reptilian biology offers an interesting contrast to that of mammals like ourselves. Stud ...
Slide ()
... Touch is mediated by four types of mechano receptors in the human hand. The terminals of myelinated sensory nerves innervating the hand are surrounded by specialized structures that detect contact on the skin. The receptors differ in morphology, innervation patterns, location in the skin, receptive ...
... Touch is mediated by four types of mechano receptors in the human hand. The terminals of myelinated sensory nerves innervating the hand are surrounded by specialized structures that detect contact on the skin. The receptors differ in morphology, innervation patterns, location in the skin, receptive ...
Jeopardy Bio Basis of Human Behavior
... Type of cell that holds neurons in place, provide nourishment, and removes waste products; Also prevents harmful substances from passing the blood-brain ...
... Type of cell that holds neurons in place, provide nourishment, and removes waste products; Also prevents harmful substances from passing the blood-brain ...
Autonomic Nervous System
... • Preganglionic fibers arise from the nuclei of cranial nerves and spinal cord segments S2 through S4 • For this reason this division is called the Craniosacral Division (or Craniosacral outflow) ...
... • Preganglionic fibers arise from the nuclei of cranial nerves and spinal cord segments S2 through S4 • For this reason this division is called the Craniosacral Division (or Craniosacral outflow) ...
File
... 1. Receptor: receive the initial stimulus (pinprick/loud noise) 2. Sensory (afferent) nerve: sends impulse to spinal cord or brain (afferent neuron of muscle spindle or tendon organ) ...
... 1. Receptor: receive the initial stimulus (pinprick/loud noise) 2. Sensory (afferent) nerve: sends impulse to spinal cord or brain (afferent neuron of muscle spindle or tendon organ) ...
File - medicalfocus tanzania home of health professional
... biological macromolecules include proteins, carbohydrates, and fats. Plastics are an excellent nonbiological example of a macromolecule. Atoms, molecules and macromolecules interact with one another in varied and complicated manners. We understand some interactions very well, but not all. It is thes ...
... biological macromolecules include proteins, carbohydrates, and fats. Plastics are an excellent nonbiological example of a macromolecule. Atoms, molecules and macromolecules interact with one another in varied and complicated manners. We understand some interactions very well, but not all. It is thes ...
1) Corticotropin releasing hormone secretion would not raise the
... b) Type 2 or Non-IDDM c) Diabetes Insipidus d) Both A and B 6) True/False: Cortisol is a glucocorticoid produced in the zona glomerulosa of the adrenal medulla and it causes glycogen in the liver to be broken down to increase the blood glucose concentration during times of stress. a) True b) False 7 ...
... b) Type 2 or Non-IDDM c) Diabetes Insipidus d) Both A and B 6) True/False: Cortisol is a glucocorticoid produced in the zona glomerulosa of the adrenal medulla and it causes glycogen in the liver to be broken down to increase the blood glucose concentration during times of stress. a) True b) False 7 ...
The Nervous System - Canton Local Schools
... Central Nervous System (CNS): The brain and spinal chord Peripheral Nervous System (PNS): the sensory and motor neurons that connect the central nervous system to the rest of the body. Two parts: 1. Autonomatic (ANS): controls the glands and muscles of the internal organs. AUTOMATIC 2. Somatic (SNS) ...
... Central Nervous System (CNS): The brain and spinal chord Peripheral Nervous System (PNS): the sensory and motor neurons that connect the central nervous system to the rest of the body. Two parts: 1. Autonomatic (ANS): controls the glands and muscles of the internal organs. AUTOMATIC 2. Somatic (SNS) ...
Nervous and Endocrine System
... into the synapse Nerve impulses travel from the dendrite through the cell to the axon terminal (one direction only) Nerve impulses travel through the cell as electrical signals ...
... into the synapse Nerve impulses travel from the dendrite through the cell to the axon terminal (one direction only) Nerve impulses travel through the cell as electrical signals ...
Heidi
... • When K+ channels finally close, the neuron has more K+ ions on the outside of the membrane causing hyperpolarization. The membrane potential drops slightly lower than the resting potential. • The refractory period is when the Na+ and K+ ions are returned to their original locations. During this ti ...
... • When K+ channels finally close, the neuron has more K+ ions on the outside of the membrane causing hyperpolarization. The membrane potential drops slightly lower than the resting potential. • The refractory period is when the Na+ and K+ ions are returned to their original locations. During this ti ...
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.