Posts

Hormones and Their Functions - Lesson 297

Image
Endocrine glands are ductless glands. We will now see hormones and their functions . Exocrine glands have ducts to secrete their secretions inside the bloodstream, such as sweat glands. Exocrine gland functions are different from endocrine glands. They secrete chemical compounds named as hormones into the bloodstream to maintain some important functions of the body. Human brain has two important endocrine glands, such as pituitary and pineal gland in the center portion of the brain. Thyroid and parathyroid glands are present in the neck portion. Thymus gland is present behind the sternum in the mediastinum. Pancreas is an endocrine gland that is present in the liver. Adrenal glands are present above each kidney. Ovaries are present in the female reproductive system and testes are the endocrine glands that are present in the male reproductive system. Now we will see what are the hormones they secrete to maintain important functions of the human body. In fact, the functions of ...

Human Endocrine System - Lesson 296

From this lesson, we are going to start Human Endocrine System . We are going to cover what is endocrine system, what are the glands that has, medical terms related to endocrine system, endocrine disease conditions, lab tests related to it, clinical procedures related to it, and endocrine system abbreviations. You should know that endocrine system can be identified with its glands and the hormones they secrete to maintain important body functions. The functions of endocrine system and its hormones in our body are very important. Endocrine hormone deficiency or excessive secretion may lead to many abnormal disease conditions in our body. There are many lab tests and clinical procedures to maintain hormone balance in our body. Human Endocrine System - An introduction It consists of glands. These glands secrete different types of hormones that are important to our body functions. These hormone-secreting glands are situated in different parts of our bo...

Tuning Fork Hearing Tests - Lesson 295

Tuning fork hearing tests are useful in evaluating a person's hearing ability. This test will be performed by a specialist who examines a patient is called as an audiologist. Every time an audiologist uses an instrument to perform this evaluation that is known as an audiometer. Different frequencies of sound waves are used to evaluate a person's hearing sensitivity by the audiologist. You might also hear about other hearing ability tests, such as Rinne test and Weber test. In this evaluation, a tuning fork is used as a source of vibration to test the patient. A tuning fork instrument is kept on the mastoid process of the patient. It is also kept in the external auditory meatus. The main aim of keeping the tuning fork in the above-said areas is to test the bone in these areas and also to test the air movement. This type of test is called as Weber test. To perform Weber or Rinne test, the person should be sit in a room with sound proof with a hea...

Unlocking the Ear Canal: How Modern Pneumatic Otoscopy Revolutionized the Routine Exam - Lesson 294

Image
A Doctor's Most Common Tool: 4 Surprising Truths Beyond the "Ear Light" An otoscopy procedure is a visual examination of the ears. To perform this exam, a device called an otoscope is used. Otoscopes are commonly used during routine physical examinations to detect ear diseases. Using an otoscope, a physician can evaluate both the external auditory canal and the middle ear. The device consists of a handle and a head portion fitted with a speculum to insert into the ear canal. A magnifying lens attached to the head allows for detailed visualization during the exam. The instrument can also assist in removing earwax (cerumen), a procedure known as ear cleaning. Otoscopes typically come in two configurations: portable, battery-operated units and wall-mounted models. The instrument is essential for diagnosing conditions such as otitis media, otitis externa, and various bacterial infections. Additionally, it is sometimes used to examine the nasal passages and throat. There is...