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Hierarchical Sequencing Method - Sequence Tagged Sites

By: HWC, Views: 5866

In the hierarchical sequencing method, researchers begin by collecting cells. In humans, each cell contains 23 pairs of chromo-somes. Here we specifically track the DNA from just one of the 23 pairs. Chromosomes have a series of unique DNA sequences, called sequence-tagged sites (STSs), that a...

Muscular Dystrophy

By: Administrator, Views: 9532

Those with muscular dystrophy usually need to receive tube feedings and home nursing care. Children attend school when possible, and is able to use an adapted computer.

Normal Heart Sounds

By: Administrator, Views: 359

An electrocardiogram (ECG, EKG) is a commonly used procedure in which the electrical events associated with the beating of the heart are evaluated. (A) Skin electrodes are applied to the chest wall, which send electrical signals to a computer that interprets the signals into graph form.

PET Scan Animation

By: Administrator, Views: 9755

Positron Emission Tomography (PET) Computer-based nuclear imaging procedure that can produce three-dimensional pictures of actual organ functioning. Ultrasonography, Brain Use of high-frequency sound waves to record echoes on an oscilloscope and film.

Abnormal Heart Sounds

By: Administrator, Views: 722

An electrocardiogram (ECG, EKG) is a commonly used procedure in which the electrical events associated with the beating of the heart are evaluated. (A) Skin electrodes are applied to the chest wall, which send electrical signals to a computer that interprets the signals into graph form. An ele...

Muscle Twitch and Muscle Tension - Motor unit size and force

By: HWC, Views: 6907

• A motor unit is a group of muscle cells controlled by a single neuron. • A stimulus of sufficient intensity will cause all the cells in the motor unit to contract. • A single contraction, caused by a single action potential, is called a muscle twitch. • Latent period: A brief per...