COMMON PROBLEMS IN HAND SURGERY
... Repeated movement/use at tendon origin causes microtears which cause chronic tears near common extensor (lateral epicondylitis) or common flexor (medial epicondylitis) origin ...
... Repeated movement/use at tendon origin causes microtears which cause chronic tears near common extensor (lateral epicondylitis) or common flexor (medial epicondylitis) origin ...
muscles
... • Strength Training – increases size and strength of fast twitch –Synthesis of actin & myosin ...
... • Strength Training – increases size and strength of fast twitch –Synthesis of actin & myosin ...
Coordination and Regulation Check 4 (Solutions)
... potassium ions into the cell. The net result is more sodium ions outside the cell than potassium ions inside the cell, therefore the inside is more negative. As the impulse passes along, the cell membrane becomes more permeable to sodium ions which move into the cell. At this point, the inside of th ...
... potassium ions into the cell. The net result is more sodium ions outside the cell than potassium ions inside the cell, therefore the inside is more negative. As the impulse passes along, the cell membrane becomes more permeable to sodium ions which move into the cell. At this point, the inside of th ...
Nervous System Lect/96
... meet are called nodes of Ranvier. Adjacent Schwann cells interdigitate at the node. When an axon potential passes along a myelinated nerve, it jumps from node to node, significantly increasing conduction rates. This is called saltatory conduction. ...
... meet are called nodes of Ranvier. Adjacent Schwann cells interdigitate at the node. When an axon potential passes along a myelinated nerve, it jumps from node to node, significantly increasing conduction rates. This is called saltatory conduction. ...
HOMEOSTASIS PC Prof Mathew Mbabuu Sep 2016 Ppt
... Some are very fast (e.g. adrenaline which acts in seconds) ...
... Some are very fast (e.g. adrenaline which acts in seconds) ...
HOMEOSTASIS - The Open Door Web Site : Home Page
... Some are very fast (e.g. adrenaline which acts in seconds) ...
... Some are very fast (e.g. adrenaline which acts in seconds) ...
Central Nervous System
... Are all neurons equal in size? Brain vs spinal cord vs peripheral nerves? About how many neurons are in the human brain? 100 billions About how many neurons are in the spinal cord? 1 billion How long do you think the longest axon in the world is? around 15 feet Nerve Fiber Coverings Schwann cell ...
... Are all neurons equal in size? Brain vs spinal cord vs peripheral nerves? About how many neurons are in the human brain? 100 billions About how many neurons are in the spinal cord? 1 billion How long do you think the longest axon in the world is? around 15 feet Nerve Fiber Coverings Schwann cell ...
Spinal Cord and Nerves
... Spinal cord made of a core of gray matter surrounded by white matter 31 pairs of spinal nerves branch off spinal cord through intervertebral foramen Functions in many ways: ...
... Spinal cord made of a core of gray matter surrounded by white matter 31 pairs of spinal nerves branch off spinal cord through intervertebral foramen Functions in many ways: ...
ppt - UK College of Arts & Sciences
... investigation of membrane potentials by determining the effects of increased extracellular K+ levels. Using several solutions of increasing K+ levels, the cells were covered and allowed to soak for 5 min. The resting membrane potential was then recorded again. The students will graph their values fo ...
... investigation of membrane potentials by determining the effects of increased extracellular K+ levels. Using several solutions of increasing K+ levels, the cells were covered and allowed to soak for 5 min. The resting membrane potential was then recorded again. The students will graph their values fo ...
Sensation and Perception
... Is it Sensation or Perception? “In college, on a date at the Spaghetti Station, I returned from the bathroom and plunked myself down in the wrong booth, facing the wrong man. I remained unaware he was not my date even as my date (a stranger to me) accosted Wrong Booth Guy, and then stormed out of t ...
... Is it Sensation or Perception? “In college, on a date at the Spaghetti Station, I returned from the bathroom and plunked myself down in the wrong booth, facing the wrong man. I remained unaware he was not my date even as my date (a stranger to me) accosted Wrong Booth Guy, and then stormed out of t ...
Scientists Figure Out How The Immune System And Brain Interact To
... In a major step in understanding how the nervous system and the immune system interact, scientists at The Feinstein Institute for Medical Research have identified a new anatomical path through which the brain and the spleen communicate. The spleen, once thought to be an unnecessary bit of tissue, is ...
... In a major step in understanding how the nervous system and the immune system interact, scientists at The Feinstein Institute for Medical Research have identified a new anatomical path through which the brain and the spleen communicate. The spleen, once thought to be an unnecessary bit of tissue, is ...
Non- directed synapses
... • An acute infectious disease of humans, particularly children, caused by any of three serotypes of human poliovirus (POLIOVIRUS). Usually the infection is limited to the gastrointestinal tract and nasopharynx, and is often asymptomatic. The central nervous system, primarily the spinal cord, may be ...
... • An acute infectious disease of humans, particularly children, caused by any of three serotypes of human poliovirus (POLIOVIRUS). Usually the infection is limited to the gastrointestinal tract and nasopharynx, and is often asymptomatic. The central nervous system, primarily the spinal cord, may be ...
The Function & Anatomy of Neurons What is a Neuron?
... Association- Carry impulses between neurons within the central nervous system(multipolar). Motor(Efferent)- Carry impulses from the central nervous system to any part of the body capable of responding. (most are multipolar). ...
... Association- Carry impulses between neurons within the central nervous system(multipolar). Motor(Efferent)- Carry impulses from the central nervous system to any part of the body capable of responding. (most are multipolar). ...
Chapter 13 Spinal Cord
... • Free nerve endings found in every tissue of body except the brain • Stimulated by excessive distension, muscle spasm & ischemia • Tissue injury releases chemicals such as kinins, or prostaglandins • Little adaptation occurs ...
... • Free nerve endings found in every tissue of body except the brain • Stimulated by excessive distension, muscle spasm & ischemia • Tissue injury releases chemicals such as kinins, or prostaglandins • Little adaptation occurs ...
The Nervous System
... • Even the same NT can have different effects in different parts of the body ...
... • Even the same NT can have different effects in different parts of the body ...
Box 9.1 The Basics of Sound (Part 1)
... External and Internal Structures of the Human Ear (Part 1) ...
... External and Internal Structures of the Human Ear (Part 1) ...
Essentials of Human Anatomy 12
... Olfactory Nerve Pathways Once olfactory receptors are stimulated, nerve impulses travel through • olfactory nerves olfactory bulbs olfactory tracts limbic system (for emotions) and olfactory cortex (for interpretation) ...
... Olfactory Nerve Pathways Once olfactory receptors are stimulated, nerve impulses travel through • olfactory nerves olfactory bulbs olfactory tracts limbic system (for emotions) and olfactory cortex (for interpretation) ...
1. nervous system
... The transmission of an action potential from one cell to another is carried out by a synaptic connection (Fig. 1-9). A couple of conditions have to be fulfilled for a stimulus to trigger an action potential. The stimulus has to be appropriate for the receptor to be stimulated (a thermo receptor does ...
... The transmission of an action potential from one cell to another is carried out by a synaptic connection (Fig. 1-9). A couple of conditions have to be fulfilled for a stimulus to trigger an action potential. The stimulus has to be appropriate for the receptor to be stimulated (a thermo receptor does ...
HW CH 5 PSY 2513 Submit your answers on canvas
... the areas of the brain are strongly committed to specific functions, and there is a high capacity for learning. b. if a part of the cortex is damaged, other parts can take over the tasks it would have handled. c. spatial skills develop more rapidly than language skills and are easier to recover afte ...
... the areas of the brain are strongly committed to specific functions, and there is a high capacity for learning. b. if a part of the cortex is damaged, other parts can take over the tasks it would have handled. c. spatial skills develop more rapidly than language skills and are easier to recover afte ...
facial nerve
... Cranial Nerve II: Optic Nerve Raised disc of the retina at the point of entry of the optic nerve is called the optic disc. ...
... Cranial Nerve II: Optic Nerve Raised disc of the retina at the point of entry of the optic nerve is called the optic disc. ...
Case Study: John Woodbury - Life Sciences Outreach Program
... encourage students to think critically and creatively about a particular topic. The nature of this educational tool is such that students are empowered to decide the direction of their research. By giving students necessary information piecemeal, they have time to focus on details while being motiva ...
... encourage students to think critically and creatively about a particular topic. The nature of this educational tool is such that students are empowered to decide the direction of their research. By giving students necessary information piecemeal, they have time to focus on details while being motiva ...
2015-2016_1Semester_Exam1_050116
... The upper control of somatomotor nuclei located the brainstem is provided by the 2nd order neural / 3rd order neural projection originating from the ventral posterior necleus / somatosensory cortex. Similar regulatory influence reaches neurons in the dorsal horn/fasciculus (n. or tr. Gracilis + cune ...
... The upper control of somatomotor nuclei located the brainstem is provided by the 2nd order neural / 3rd order neural projection originating from the ventral posterior necleus / somatosensory cortex. Similar regulatory influence reaches neurons in the dorsal horn/fasciculus (n. or tr. Gracilis + cune ...
Rheobase
Rheobase is a measure of membrane excitability. In neuroscience, rheobase is the minimal current amplitude of infinite duration (in a practical sense, about 300 milliseconds) that results in the depolarization threshold of the cell membranes being reached, such as an action potential or the contraction of a muscle. In Greek, the root ""rhe"" translates to current or flow, and ""basi"" means bottom or foundation: thus the rheobase is the minimum current that will produce an action potential or muscle contraction.Rheobase can be best understood in the context of the strength-duration relationship (Fig. 1). The ease with which a membrane can be stimulated depends on two variables: the strength of the stimulus, and the duration for which the stimulus is applied. These variables are inversely related: as the strength of the applied current increases, the time required to stimulate the membrane decreases (and vice versa) to maintain a constant effect. Mathematically, rheobase is equivalent to half the current that needs to be applied for the duration of chronaxie, which is a strength-duration time constant that corresponds to the duration of time that elicits a response when the nerve is stimulated at twice rheobasic strength.The strength-duration curve was first discovered by G. Weiss in 1901, but it was not until 1909 that Louis Lapicque coined the term ""rheobase"". Many studies are being conducted in relation to rheobase values and the dynamic changes throughout maturation and between different nerve fibers. In the past strength-duration curves and rheobase determinations were used to assess nerve injury; today, they play a role in clinical identification of many neurological pathologies, including as Diabetic neuropathy, CIDP, Machado-Joseph Disease, and ALS.