Touch Pressure & Pain
... converts pressure stimulation into neural messages it sends to the brain. • Constant pressure causes sensory adaptation and it either reduces the number of signals or quits sending them all together. (like the clothes on your body) • Sensory receptors are located unevenly on the body so certain area ...
... converts pressure stimulation into neural messages it sends to the brain. • Constant pressure causes sensory adaptation and it either reduces the number of signals or quits sending them all together. (like the clothes on your body) • Sensory receptors are located unevenly on the body so certain area ...
Three months ago, Mr. Jay injured his right elbow in
... Mrs. Robin is an online blogger who spends the majority of her day at the computer typing and using the mouse. A few months ago, she started to experience numbness in her right hand. She ignored the numbness until she recently started to feel pain on the palmar side of her first 4 digits. The pain i ...
... Mrs. Robin is an online blogger who spends the majority of her day at the computer typing and using the mouse. A few months ago, she started to experience numbness in her right hand. She ignored the numbness until she recently started to feel pain on the palmar side of her first 4 digits. The pain i ...
Lecture 12
... Touch Physiology (cont’d) • kinesthetic receptors: – neurological patient Ian Waterman • cutaneous nerves connecting Waterman’s kinesthetic mechanoreceptors to brain destroyed by viral infection • lacked kinesthetic senses, dependent on vision to tell limb positions ...
... Touch Physiology (cont’d) • kinesthetic receptors: – neurological patient Ian Waterman • cutaneous nerves connecting Waterman’s kinesthetic mechanoreceptors to brain destroyed by viral infection • lacked kinesthetic senses, dependent on vision to tell limb positions ...
1 - optometrie.ch
... machinery (organelles) in the cell body, which produce axoplasm One of the important basic science concepts is understanding that axoplasmic flow is a dynamic process; and that when it stops, the axon dies. This is because the axon has little machinery (organelles) to make molecules that the axon re ...
... machinery (organelles) in the cell body, which produce axoplasm One of the important basic science concepts is understanding that axoplasmic flow is a dynamic process; and that when it stops, the axon dies. This is because the axon has little machinery (organelles) to make molecules that the axon re ...
Chapter 15 Anatomy & Physiology
... the hypothalamus. – There are several times more cold receptors than hot receptors and their structures are indistinguishable. – The pathways of pain receptors and those of the thermoreceptors are about the same, ii.e. the reticular formation, the thalamus, the primary sensory cortex. – Thermorecept ...
... the hypothalamus. – There are several times more cold receptors than hot receptors and their structures are indistinguishable. – The pathways of pain receptors and those of the thermoreceptors are about the same, ii.e. the reticular formation, the thalamus, the primary sensory cortex. – Thermorecept ...
NERVOUS SYSTEM Aids in remembering, thinking, moving
... Higher mental functions -memory -reasoning ...
... Higher mental functions -memory -reasoning ...
Neurons - Cloudfront.net
... •brain •spinal cord •peripheral nerves •neurons Functions: •Body’s response to internal/external stimuli •Control body functions •Communication ...
... •brain •spinal cord •peripheral nerves •neurons Functions: •Body’s response to internal/external stimuli •Control body functions •Communication ...
Nose and Paranasal Sinuses
... V2 by two sensory roots. Since the ganglion is parasympathetic, there are preganglionic neurons feeding into it from the facial nerve (greater petrosal branch) that synapse at this point then continue onward as postganglionic neurons. ...
... V2 by two sensory roots. Since the ganglion is parasympathetic, there are preganglionic neurons feeding into it from the facial nerve (greater petrosal branch) that synapse at this point then continue onward as postganglionic neurons. ...
Sensory function
... • Integrative function. The nervous system integrates (processes) sensory information by analyzing and storing some of it and by making decisions for appropriate responses. • An important integrative function is perception, the conscious awareness of sensory stimuli. Perception occurs in the brain. ...
... • Integrative function. The nervous system integrates (processes) sensory information by analyzing and storing some of it and by making decisions for appropriate responses. • An important integrative function is perception, the conscious awareness of sensory stimuli. Perception occurs in the brain. ...
Histological Rearrangement in the Facial Nerve and Central Nuclei
... facial nerve trunk was transected peripheral to the stylomastoid foramen. z Then hypoglossal nerve was dissected as far as possible beyond the external carotid artery and was transected, then the proximal stump was approximated to the distal stump of the facial nerve. ...
... facial nerve trunk was transected peripheral to the stylomastoid foramen. z Then hypoglossal nerve was dissected as far as possible beyond the external carotid artery and was transected, then the proximal stump was approximated to the distal stump of the facial nerve. ...
HEARING
... Decibel: measures how loud a sound is 0-20: Absolute threshold (whispering) 30-60: Moderate (leaves rustling) 70-90: Loud (subway train) 100-120: Pain threshold (rock concert) 130-150: severe pain (jet engine) ...
... Decibel: measures how loud a sound is 0-20: Absolute threshold (whispering) 30-60: Moderate (leaves rustling) 70-90: Loud (subway train) 100-120: Pain threshold (rock concert) 130-150: severe pain (jet engine) ...
The Nervous System
... • consists of nerves that contain only long dendrites and/or long axons There are 3 types of nerves: 1. Sensory nerves: a bundle of nerve fibers that consists of only long dendrites of sensory neurons 2. Motor nerves: a bundle that consists of only the long axons of motor neurons 3. Mixed nerves: a ...
... • consists of nerves that contain only long dendrites and/or long axons There are 3 types of nerves: 1. Sensory nerves: a bundle of nerve fibers that consists of only long dendrites of sensory neurons 2. Motor nerves: a bundle that consists of only the long axons of motor neurons 3. Mixed nerves: a ...
Neurons Short Version
... A special type of connective tissue cell holding functioning neurons together Astrocytes, star shaped neuroglia attach neurons to small blood vessels Microglia, smaller than astrocytes, generally are stationary but can move about as microbe eating scavengers (phagocytes) The oligodendroglia ( oligod ...
... A special type of connective tissue cell holding functioning neurons together Astrocytes, star shaped neuroglia attach neurons to small blood vessels Microglia, smaller than astrocytes, generally are stationary but can move about as microbe eating scavengers (phagocytes) The oligodendroglia ( oligod ...
in brain & spinal cord
... From brain via motor tracts Contains centers for Reflex Arcs Interneurons switch/transfer incoming sensory impulses ...
... From brain via motor tracts Contains centers for Reflex Arcs Interneurons switch/transfer incoming sensory impulses ...
Neurology—midterm review
... -gray H—center of the cord, unmyelinated material/nerve cell bodies, glial cells, dendrites, and unmyelinated association neurons *anterior horns of the gray H—cell bodies, et cetera of motor neurons *posterior horns of the gray H—neurites (extensions off the cell body that carry the nerve impulse) ...
... -gray H—center of the cord, unmyelinated material/nerve cell bodies, glial cells, dendrites, and unmyelinated association neurons *anterior horns of the gray H—cell bodies, et cetera of motor neurons *posterior horns of the gray H—neurites (extensions off the cell body that carry the nerve impulse) ...
Chapter 40
... 3. Specialized function into peripheral afferent and efferent nerves, connecting to the CNS 4. An increased number of association neurons and other synaptic connections 5. Cephalization, with a concentration of nervous (including sensory) tissue at the head end D. Flatworms have cerebral ganglia tha ...
... 3. Specialized function into peripheral afferent and efferent nerves, connecting to the CNS 4. An increased number of association neurons and other synaptic connections 5. Cephalization, with a concentration of nervous (including sensory) tissue at the head end D. Flatworms have cerebral ganglia tha ...
Somatic Sensations: General Organization
... pressure, pain, cold, warmth, itch, and tickle from the limbs, trunk, neck, and posterior head to the postcentral gyrus of the cerebral cortex. University of Jordan ...
... pressure, pain, cold, warmth, itch, and tickle from the limbs, trunk, neck, and posterior head to the postcentral gyrus of the cerebral cortex. University of Jordan ...
The big picture:
... • Somatic motor efferent nerves leave CNS and carry info to striated voluntary muscles – Motor aspects are under our conscious and voluntary control – CNS control of somatic muscles: arises in pre-central region of the cortex – Then via cranial nerves and spinal nerves to all skeletal muscles • Soma ...
... • Somatic motor efferent nerves leave CNS and carry info to striated voluntary muscles – Motor aspects are under our conscious and voluntary control – CNS control of somatic muscles: arises in pre-central region of the cortex – Then via cranial nerves and spinal nerves to all skeletal muscles • Soma ...
The Peripheral Nervous System
... Sensory • General somatic senses – include touch, pain, temperature, vibration, pressure. • Proprioceptive senses – detect stretch in tendons and muscle provide information on body position, orientation and movement of body in space ...
... Sensory • General somatic senses – include touch, pain, temperature, vibration, pressure. • Proprioceptive senses – detect stretch in tendons and muscle provide information on body position, orientation and movement of body in space ...
Microneurography
Microneurography is a neurophysiological method employed by scientists to visualize and record the normal traffic of nerve impulses that are conducted in peripheral nerves of waking human subjects. The method has been successfully employed to reveal functional properties of a number of neural systems, e.g. sensory systems related to touch, pain, and muscle sense as well as sympathetic activity controlling the constriction state of blood vessels. To study nerve impulses of an identified neural system, a fine tungsten needle electrode is inserted into the nerve and connected to a high gain recording amplifier. The exact position of the electrode tip within the nerve is then adjusted in minute steps until the electrode discriminates impulses of the neural system of interest. A unique feature and a significant strength of the microneurography method is that subjects are fully awake and able to cooperate in tests requiring mental attention, while impulses in a representative nerve fibre or set of nerve fibres are recorded, e.g. when cutaneous sense organs are stimulated or subjects perform voluntary precision movements.