Immunization

  • posted Date:2017 Sep, 16

IntroductionSome infectious diseases are common and can occur many times in the same person, others can only occur once...

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Cardiovascular Disease

  • posted Date:2017 Sep, 16

IntroductionCardiovascular disease refers to the class of diseases that involve the heart and/or blood vessels (arteries...

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Blood Pressure

  • posted Date:2017 Sep, 16

IntroductionThe pressure of the blood in the circulatory system, often measured for diagnosis since it is closely relate...

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Blood Diseases

  • posted Date:2017 Sep, 16

IntroductionPeople may be affected by many different types of blood conditions and blood cancers. Common blood disorders...

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ABO Blood Group System

  • posted Date:2017 Sep, 16

IntroductionThe ABO blood group is represented by substances on the surface of red blood cells (RBCs). These substances...

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The Sympathetic System

  • posted Date:2017 Sep, 16

IntroductionThe sympathetic nervous system activates what is often termed the fight or flight response, as it is most ac...

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Excitatory and inhibitory...

  • posted Date:2017 Sep, 16

OverviewThe release of a excitatory neurotransmitter (ACHe) at the synapses will cause an inflow of positively charged s...

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Hair

  • posted Date:2017 Sep, 16

Types of hairHumans have three different types of hair: Lanugo, the fine hair that covers nearly the entire body of embr...

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Redox Reaction

  • posted Date:2017 Sep, 16

IntroductionThis is a simultaneous oxidation-reduction process whereby cellular metabolism occurs, such as the oxidation...

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Adolescence

  • posted Date:2017 Sep, 16

OverviewAdolescence is the period of psychological and social transition between childhood and adulthood. Adolescence is...

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Apoptosis

  • posted Date:2017 Sep, 16

OverviewApoptosis is the process of regulated cell death and removal. In some cases cell damage can trigger apoptosis, b...

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Female Reproductive Cycle

  • posted Date:2017 Sep, 16

OverviewTowards the end of puberty, girls begin to release eggs as part of a monthly period called the female reproducti...

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Aging

  • posted Date:2017 Sep, 16

OverviewFor most men, testosterone secretion continues throughout life, as does sperm production, though both diminish w...

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The Endocrine System

  • posted Date:2017 Sep, 16

OverviewThe endocrine system is a control system of ductless glands that secrete chemical messengers called hormones tha...

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The Digestive System

  • posted Date:2017 Sep, 16

OverviewThe first step in the digestive system can actually begin before the food is even in your mouth. When you smell...

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The Gastrointestinal Syst...

  • posted Date:2017 Sep, 16

OverviewThe Gastrointestinal System is responsible for the breakdown and absorption of various foods and liquids needed...

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Stimulation of Breathing

  • posted Date:2017 Sep, 16

OverviewThere are two pathways of motor neuron stimulation of the respiratory muscles. The first is the control of volun...

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The Respiratory System

  • posted Date:2017 Sep, 16

OverviewThe Respiratory System is crucial to every human being. Without it, we would cease to live outside of the womb....

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Formation of Urine

  • posted Date:2017 Sep, 16

OverviewUrine is formed in three steps: Filtration, Reabsorption, and SecretionFiltrationBlood enters the afferent arter...

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The Urinary System

  • posted Date:2017 Sep, 16

OverviewThe Urinary System is a group of organs in the body concerned with filtering out excess fluid and other substanc...

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AIDS and HIV

  • posted Date:2017 Sep, 16

OverviewAcquired immunodeficiency disease (AIDS) is a well-known immune system disease. Acquired Immune Deficiency Syndr...

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Immune System Disorder

  • posted Date:2017 Sep, 16

OverviewThe immune system is a very complex and highly developed system, yet it has a very simple mission, seek and dest...

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The Lymphatic System

  • posted Date:2017 Sep, 16

OverviewThe lymphatic system and the immune system are terms that are used interchangeably to refer to the body's abilit...

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The immune system

  • posted Date:2017 Sep, 16

OverviewThe immune system is a complex system that is responsible for protecting us against infections and foreign subst...

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Cardiac Cycle

  • posted Date:2017 Sep, 16

OverviewCardiac cycle is the term used to describe the relaxation and contraction that occur, as a heart works to pump b...

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The Circulatory System

  • posted Date:2017 Sep, 16

IntroductionThe circulatory system is extremely important in sustaining life. It’s proper functioning is responsible for...

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The Heart

  • posted Date:2017 Sep, 16

IntroductionThe heart is a hollow, muscular organ about the size of a fist. It is responsible for pumping blood through...

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The Cardiovascular System

  • posted Date:2017 Sep, 16

OverviewThe heart is the life-beating, always-thumping muscle in your chest. From inside the womb until death, the thump...

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Blood

  • posted Date:2017 Sep, 16

IntroductionThe primary function of blood is to supply nutrients and constitutional elements to tissues and to remove wa...

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The Muscular System

  • posted Date:2017 Sep, 16

IntroductionThe muscular system is the biological system of humans that allows them to move. The muscular system, in ver...

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Anatomy of the Ear

  • posted Date:2017 Sep, 16

IntroductionThe ear has three divisions: the outer ear, middle ear, and the inner ear.Outer Ear (Auricle, Ear Canal, Sur...

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Anatomy of the Eye

  • posted Date:2017 Sep, 16

IntroductionThe human eye is a elongated ball about 1-inch (2.5 cm) in diameter and is protected by a bony socket in the...

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Types of Taste

  • posted Date:2017 Sep, 16

SaltArguably the simplest receptor found in the mouth is the salt (NaCl) receptor. An ion channel in the taste cell wall...

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Senses

  • posted Date:2017 Sep, 16

IntroductionSenses are the physiological methods of perception. The senses and their operation, classification, and theo...

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Types of Neurons

  • posted Date:2017 Sep, 16

 IntroductionThere are three types of neurons in the body. We have sensory neurons, interneurons, and motor neurons. Neu...

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The Limbic System

  • posted Date:2017 Sep, 16

IntroductionThe Limbic System is a complex set of structures found just beneath the cerebrum and on both sides of the th...

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Brain

  • posted Date:2017 Sep, 15

IntroductionThe brain is found in the cranial cavity. Within it are found the higher nerve centers responsible for coord...

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The Nervous System

  • posted Date:2017 Sep, 15

IntroductionThe central nervous system includes the brain and spinal cord. The brain and spinal cord are protected by bo...

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Skin

  • posted Date:2017 Sep, 15

IntroductionIn zoology and dermatology, skin is an organ of the integumentary system made up of a layer of tissues that...

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The integumentary system

  • posted Date:2017 Sep, 15

IntroductionThe integumentary system consists of the skin, the subcutaneous tissue below the skin, hair, nails, and asso...

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Cells of the Human Body

  • posted Date:2017 Sep, 15

IntroductionAlthough there are specialized cells - both in structure and function - within the body, all cells have simi...

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Homeostasis Throughout th...

  • posted Date:2017 Sep, 15

ExplanationsEach body system contributes to the homeostasis of other systems and of the entire organism. No system of th...

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Positive and Negative Fee...

  • posted Date:2017 Sep, 15

IntroductionWhen a change of variable occurs, there are two main types of feedback to which the system reacts:Negative f...

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Homeostasis

  • posted Date:2017 Sep, 15

IntroductionHomeostasis in a general sense refers to stability, balance or equilibrium. Maintaining a stable internal en...

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