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Results for: 'HIV infection'
By: Administrator, Views: 10687
Types of fractures: - Colles' - Pott's - Compression - Vertebral compression - Epiphyseal - Stress - Hip Closed, or simple–A completely internal break that does not involve a break in the skin (x-ray of the tibia and fibula). Note the break in the fibula (smaller bone). Open, or co...
Natural Selection, Species Isolation and Real World Example
By: HWC, Views: 7170
`Natural selection' is the process in which organisms with adaptive traits survive and breed in greater number than organisms without such traits. Eventually, almost all of the individuals in the population will have the same adaptive trait. This was the concept presented by Charles Darwin in ...
Cellular defenses (natural killer cells, phagocyte types & process of phagocytosis)
By: HWC, Views: 7474
• Lymphocytes that rapidly defend against abnormal (cancer) or virus-infected cells. • Found in blood, spleen, lymph nodes, and red bone marrow. • Lack receptors for binding with specific antigens. • Act upon cells displaying abnormal MHC antigens. • NK cells destroy cells in ...
Studying the Left and Right Brain Independently
By: Administrator, Views: 10991
A seizure, technically known as an epileptic seizure, is a period of symptoms due to abnormally excessive or synchronous neuronal activity in the brain. Outward effects vary from uncontrolled shaking movements involving much of the body with loss of consciousness (tonic-clonic seizure), to shakin...
By: Administrator, Views: 10980
Multiple sclerosis (MS) is a demyelinating disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged. This damage disrupts the ability of parts of the nervous system to communicate, resulting in a range of signs and symptoms, including physical, mental, and so...
By: Administrator, Views: 10822
Otitis media is a group of inflammatory diseases of the middle ear. The two main types are acute otitis media (AOM) and otitis media with effusion (OME). AOM is an infection of rapid onset that usually presents with ear pain. In young children this may result in pulling at the ear, increased cryi...
By: HWC, Views: 8523
What Are Antibodies? Antibodies, also known as immunoglobulins, are Y-shaped proteins that are produced by the immune system to help stop intruders from harming the body. When an intruder enters the body, the immune system springs into action. These invaders, which are called antigens, can be vi...
Components of the Nervous System
By: Administrator, Views: 435
The nervous system is the part of an animal that coordinates its actions by transmitting signals to and from different parts of its body. The nervous system detects environmental changes that impact the body, then works in tandem with the endocrine system to respond to such events. Nervous tissue...
Brain Anatomy Animation (Part 1 of 2)
By: Administrator, Views: 11095
The human brain is the central organ of the human nervous system, and with the spinal cord makes up the central nervous system. The brain consists of the cerebrum, the brainstem and the cerebellum. It controls most of the activities of the body, processing, integrating, and coordinating the infor...
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