14.1 Plant Tropisms and Hormonal Control
... Plant hormones move much slower as they have to be transported a fair distance to where they take effect in stimulating things such as flowering or causing stems to bend. Hormones are often transported using xylem and phloem, from cell to cell and occasionally by air. Movement of a plant hormone req ...
... Plant hormones move much slower as they have to be transported a fair distance to where they take effect in stimulating things such as flowering or causing stems to bend. Hormones are often transported using xylem and phloem, from cell to cell and occasionally by air. Movement of a plant hormone req ...
Spinal Cord - Northside Middle School
... One of the final frontiers is the human brain. Current research reports that we change our brain with every conversation, every action we partake in. Our brain keeps changing and developing well into our 80’s (current research states 80’s but it could be longer). Just because your biological hand ma ...
... One of the final frontiers is the human brain. Current research reports that we change our brain with every conversation, every action we partake in. Our brain keeps changing and developing well into our 80’s (current research states 80’s but it could be longer). Just because your biological hand ma ...
Firing Rate Models
... Notes: Firing rate models can include dynamical effects such as depression and facilitation (if ds/dt is calculated) and adaptation (if dr/dt is calculated). Each term should represent a group of similar neurons, or population, so that spike times from members of a population are very close, reducin ...
... Notes: Firing rate models can include dynamical effects such as depression and facilitation (if ds/dt is calculated) and adaptation (if dr/dt is calculated). Each term should represent a group of similar neurons, or population, so that spike times from members of a population are very close, reducin ...
2016-2017_1stSemester_Exam1_050117_final
... Define the following terms! 5 points Basket cell: ………………………………………………………………………………………… Climbing fiber: ………………………………………………………………………….................. Apoptosis: ….……………………………………………………………………………………… Broca area: .. .......................................................................................... ...
... Define the following terms! 5 points Basket cell: ………………………………………………………………………………………… Climbing fiber: ………………………………………………………………………….................. Apoptosis: ….……………………………………………………………………………………… Broca area: .. .......................................................................................... ...
PowerLecture: Chapter 13
... Action potentials jump from node to node (saltatory conduction); such jumps are fast and efficient. There are no Schwann cells in the central nervous system; here processes from oligodendrocytes form the sheaths of myelinated axons. ...
... Action potentials jump from node to node (saltatory conduction); such jumps are fast and efficient. There are no Schwann cells in the central nervous system; here processes from oligodendrocytes form the sheaths of myelinated axons. ...
document
... Tendon organ and muscle spindles continuously monitor muscle actions and are essential components of the neuromuscular system. They tell the nervous system abut the state of muscle contraction ...
... Tendon organ and muscle spindles continuously monitor muscle actions and are essential components of the neuromuscular system. They tell the nervous system abut the state of muscle contraction ...
THE NERVOUS SYSTEM I
... Consists of nerves, ganglia, receptors. It is the part of the nervous system outside the CNS. ...
... Consists of nerves, ganglia, receptors. It is the part of the nervous system outside the CNS. ...
... 3. Identify the cortical regions important for primary gustation 4. Compare and contrast olfaction with other sensory modalities, including its cranial nerve and nature of projection to cortex 5. Discuss how sub-modalities of taste and smell are sorted as they ascend to the cortex 6. Appreciate that ...
Neuroscience and Behavior Notes 2-2 (obj 7-10)
... Interconnected neurons form networks in the brain. Theses networks are complex and modify with growth and experience. ...
... Interconnected neurons form networks in the brain. Theses networks are complex and modify with growth and experience. ...
1) Corticotropin releasing hormone secretion would not raise the
... 1) A _______hormone only exerts its effects on cells with receptors that are near its site of production, prostaglandins are a classic example. a) Endocrine b) Autocrine c) Neurotransmitter d) Paracrine 2) True/False: Lipid soluble hormones such as thyroxine and estradiol typically use membrane rece ...
... 1) A _______hormone only exerts its effects on cells with receptors that are near its site of production, prostaglandins are a classic example. a) Endocrine b) Autocrine c) Neurotransmitter d) Paracrine 2) True/False: Lipid soluble hormones such as thyroxine and estradiol typically use membrane rece ...
Sensory Receptors
... • Warns of actual or impending tissue damage protective action • Stimuli include extreme pressure and temperature, histamine, K+, ATP, acids, and bradykinin • Impulses travel on fibers that release neurotransmitters glutamate and substance P • Some pain impulses are blocked by inhibitory ...
... • Warns of actual or impending tissue damage protective action • Stimuli include extreme pressure and temperature, histamine, K+, ATP, acids, and bradykinin • Impulses travel on fibers that release neurotransmitters glutamate and substance P • Some pain impulses are blocked by inhibitory ...
NEUROGLIA (Glial cells) Supporting cells of the CNS and PNS
... •Anchors neurons to capillaries in the grey matter of the CNS •Reclaims K+ for use in the sodium potassium pump •Metabolizes glucose for metabolic function and ATP production •Reclaims Ach ...
... •Anchors neurons to capillaries in the grey matter of the CNS •Reclaims K+ for use in the sodium potassium pump •Metabolizes glucose for metabolic function and ATP production •Reclaims Ach ...
Somatic Sensation - PROFESSOR AC BROWN
... 1. Encapsulated and hair follicle receptors are more sensitive and are innervated by larger fibers 2. Superficial and hair follicle receptors tend to have smaller receptive fields 3. Receptors are unevenly distributed, which accounts in part for the difference in sensitivity and acuity in various bo ...
... 1. Encapsulated and hair follicle receptors are more sensitive and are innervated by larger fibers 2. Superficial and hair follicle receptors tend to have smaller receptive fields 3. Receptors are unevenly distributed, which accounts in part for the difference in sensitivity and acuity in various bo ...
lecture notes #4 membrane potentials
... 1. A positive feedback cycle opens the sodium channels 2. An action potential will not occur until the initial rise in membrane potential is great enough to create the positive feedback (THRESHOLD) a. A sudden rise in membrane potential of 15-30 mV is usually required (thus up to about 65 mV) b. Thi ...
... 1. A positive feedback cycle opens the sodium channels 2. An action potential will not occur until the initial rise in membrane potential is great enough to create the positive feedback (THRESHOLD) a. A sudden rise in membrane potential of 15-30 mV is usually required (thus up to about 65 mV) b. Thi ...
Students know
... • Brain-controls nervous system, maintains normal function of the body, contains 100 billion neurons ...
... • Brain-controls nervous system, maintains normal function of the body, contains 100 billion neurons ...
Smell and Taste
... There are three types of papillae, which are distributed on the tongue as shown in (b). The taste buds found in each type of papillae show slightly different sensitivities to the four basic tastes, as mapped out in the graph at the top. Thus, sensitivity to the primary tastes varies across the tongu ...
... There are three types of papillae, which are distributed on the tongue as shown in (b). The taste buds found in each type of papillae show slightly different sensitivities to the four basic tastes, as mapped out in the graph at the top. Thus, sensitivity to the primary tastes varies across the tongu ...
“Electrical Properties of Neuron”
... Cell membrane: 2-3 nm thick and is impermeable to most charged molecules and so acts as a capacitor by separating the charges lying on either side of the membrane. NB Capacitors, store charge across an insulating medium. Don’t allow current to flow across, but charge can be redistributed on each ...
... Cell membrane: 2-3 nm thick and is impermeable to most charged molecules and so acts as a capacitor by separating the charges lying on either side of the membrane. NB Capacitors, store charge across an insulating medium. Don’t allow current to flow across, but charge can be redistributed on each ...
Unit 3 "Cliff Notes" Review
... Each neuron receives excitatory and inhibitory signals from many neurons. When the excitatory signals minus the inhibitory signals exceed a minimum intensity (threshold) the neuron fires an action potential… or if the excitatory party animals outvote the inhibitory party poopers, the party’s on. 9.3 ...
... Each neuron receives excitatory and inhibitory signals from many neurons. When the excitatory signals minus the inhibitory signals exceed a minimum intensity (threshold) the neuron fires an action potential… or if the excitatory party animals outvote the inhibitory party poopers, the party’s on. 9.3 ...
The Brain - Science Leadership Academy
... • The cerebrum is responsible for 85% of the weight of the brain. ...
... • The cerebrum is responsible for 85% of the weight of the brain. ...
Introduction to Psychology
... dendrite or cell body of the receiving neuron tiny gap at this junction is called the synaptic gap or cleft ...
... dendrite or cell body of the receiving neuron tiny gap at this junction is called the synaptic gap or cleft ...
Invertebrate nervous systems:
... Briefly, the modifications were these:1.The hindbrain became divided into a ventral portion, called the medulla oblongata, a dorsal portion, the cerebellum, and the anterior pons. The medulla became specialized as a control center for some autonomic and somatic pathways concerned with vital function ...
... Briefly, the modifications were these:1.The hindbrain became divided into a ventral portion, called the medulla oblongata, a dorsal portion, the cerebellum, and the anterior pons. The medulla became specialized as a control center for some autonomic and somatic pathways concerned with vital function ...
psychology - Eagan High School
... Neuron- a nerve cell, the foundation of the nervous system. (All different shapes and sizes, but all have the same functions.) Dendrite- receive messages and conduct impulses toward the cell body (soma). Axon- passes messages away from the cell body to other neurons, muscles or glands. Synapse- flui ...
... Neuron- a nerve cell, the foundation of the nervous system. (All different shapes and sizes, but all have the same functions.) Dendrite- receive messages and conduct impulses toward the cell body (soma). Axon- passes messages away from the cell body to other neurons, muscles or glands. Synapse- flui ...
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.