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Kit Ng, Ph.D.

Anatomy & Physiology Professor

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Tag: Muscle

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Muscle models of the lower limb

March 15, 2017March 15, 2017 Kit Ng

(Last updated: 3-15-2017) Most pictures on this page contain a link in the caption to the annotated version of the same model. Continue reading Muscle models of the lower limb

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Motor Endplate

August 12, 2016September 4, 2016 Kit Ng

Motor endplate is also known as terminal button.  This is the specialized synapse that an alpha-motorneuron makes to all the muscle fibers (i.e. a motorunit) it innervates.  Acetylcholine is secreted at the synapse that in turn depolarize the muscle fibers … Continue reading Motor Endplate

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Cardiac Muscle

August 12, 2016September 3, 2016 Kit Ng

Cardiac muscle resembles skeletal muscle in the striations and thus also known as striated muscles.  However, cardiac muscle is different in that cardiac muscle cells (cardiacmyocytes) do not fuse and thus the resulting fibers are not multinucleated.  Each cardiacmyocyte are … Continue reading Cardiac Muscle

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Skeletal Muscle

August 12, 2016September 16, 2016 Kit Ng

Skeletal muscle tissue is easily distinguished by the striation (thus also known as striated muscle).  They are arranged as long cylinders and since fused from development, contain multiple nuclei within each muscle fiber/cell. Continue reading Skeletal Muscle

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Muscle Spindle

August 11, 2016 Kit Ng

Muscle spindle is a stretch receptor that is found within the belly of a muscle.  It monitors how stretched that particular muscle is and initiate the stretch reflex to prevent injury caused by over-stretching and to maintain posture. Below is … Continue reading Muscle Spindle

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Smooth Muscle

August 11, 2016February 25, 2017 Kit Ng

Also known as non-striated muscle and can be found within the walls of large blood vessels (including aorta, arteries, arterioles and veins but in different amount), trachea, lower part of esophagus, intestines and arrector pili of skin.  These are involuntary … Continue reading Smooth Muscle

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