In dark or dim light, the pupil dilates to allow more light into the eye to improve vision. Normal pupil size tends to range between 2.0 and 5.0 millimeters, depending on the lighting. The younger you are, the larger your pupils tend to be.

This sqadia.com short video clip is a brief explanation of Epithelium.

Epithelium is one of the four basic tissues of the body and is derived from all three germ layers.

It is composed of very closely packed, contiguous cells, with very little or no extracellular material in the extracellular spaces.

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Epithelial membranes can be: Simple squamous epithelium, Simple cuboidal epithelium, Simple columnar epithelium, and Pseudostratified epithelium.

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When there are two or more layers of cells epithelia is referred to as stratified, hence can be stratified squamous, stratified cuboidal and stratified columnar.

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The shoulder and arm receives its nerve supply through the brachial plexus. The brachial plexus is a complex network of nerves which come out of the neck, passes down to the front of the shoulder and then splits into many separate nerves to travel to different muscles and parts of the skin. Normally an arm movement is produced by initially thinking of the movement, then a message passes from the brain, down through the spinal cord to the appropriate nerve. Then the instruction to move is conveyed along the nerve to the specific arm muscle which then contracts and moves the arm.

A pilonidal sinus (PNS) is a small cyst or abscess that occurs in the cleft at the top of the buttocks. A PNS usually contains hair, dirt, and debris. It can cause severe pain and can often become infected. If it becomes infected, it may ooze pus and blood and have a foul odor. A PNS is a condition that mostly affects men and is also common in young adults. It’s also more common in people who sit a lot, like cab drivers.

Symptoms of blood clots in specific body locations are as follows: Symptoms of blood clots in legs (deep vein thrombosis (DVT) are pain, redness, and swelling. Symptoms of an arterial blood clot in a limb (leg or arm) include pain, pale color, and coolness to the touch. and the leg is cool and pale.

Varicose veins are generally benign. The cause of this condition is not known. For many people, there are no symptoms and varicose veins are simply a cosmetic concern. In some cases, they cause aching pain and discomfort or signal an underlying circulatory problem. Treatment involves compression stockings, exercise, or procedures to close or remove the veins.

This video describes the effects of heart disease and explains how stents are used to treat damaged arteries.

The peroneal artery is closely positioned to the fibula. The artery arises from the tibioperoneal trunk, distal to the takeoff of the anterior tibial artery (seen in the illustration below perforating the interosseous membrane). The peroneal artery sends perforators laterally to the skin of the lower leg, sometimes in a septocutaneous fashion via the lateral intermuscular septum, but often with muscular perforators. The length of the pedicle is usually short, but can be increased substantially by dissecting the peroneal artery and its venae from the fibula and using the distal bone for reconstruction.

McRoberts Maneuver for Shoulder Dystocia Birth

Intrauterine insemination (IUI) is a fertility treatment that involves placing sperm inside a woman's uterus to facilitate fertilization. The goal of IUI is to increase the number of sperm that reach the fallopian tubes and subsequently increase the chance of fertilization

Website : https://www.udemy.com/course/h....istology/?referralCo

Human Histology is one of the basic subject in a Medical Student career. By learning Histology in a proper way, this will help you to get a Visual memory of the Human body. Using this Visual memory, you can Learn any other subjects with little effort. 

This Course is very well organized with lot of Histology images, Line diagrams, simple presentations and clear Explanations. This course has 33 videos, 19 chapters, 6 hours long covering all topics. Every topic is made Simple and Complete. Dr Ram has a great teaching style and has a good experience in teaching medical subjects to students.

After finishing this course, you will be better in your basics, with ability to visualize the human body and this will create an intense thirst to learn more. We give 100% guarantee that you will have a complete and in-depth understanding in short time, You will start to enjoy Learning Medicine because of the visualization of human body you get from this course and you will be ready to face any Medical exams in world. 

Course features:

- Complete Histology lectures covering all chapters

- 19 chapters | 33 Videos | 6 Hours

- Clear Histology images

- Line diagrams for easy understanding

- Lot of memory tips

- High quality audio and Videos

- Can be viewed in Pc, or Phones or TV

Course content: ( 19 Chapters, 33 videos )

I The Cell - 3 Lessons

1. Nucleus

2. Cytoplasm

3. Cell Junctions

II Tissues - 11 Lessons

4. Epithelial tissues

5. Connective tissues

6. Muscular tissues

7. Nervous tissues

8. Bones

9. Cartilage

10. Lymphoid tissues

III Organ systems - 19 Lessons

11. Cardiovascular system

12. Respiratory system

13. Gastrointestinal system

14. Liver and Exocrine pancreas

15. Endocrine system

16. Urinary system

17. male reproductive system

18. Female reproductive system

19. The skin

Instructor : Dr Ram , Med Madness

Watch that video of Sperm Formation and Ejaculation Process

Bone Movement During Childbirth and Delivery 3D

This video gives you an overview of how a cardiac catheterization is performed.

Surgical procedure of Tonsillectomy and Adenoidectomy

Breast Cancer spreads by 3 mechanisms- local spread, by lymph nodes, or through the blood. Dr. Lorraine Champion, and Dr. Lisa Bailey discuss how breast cancer spreads. They discuss the different methods of spread and how this will affect the treatment of breast cancer.

Head to Toe Assesment

Mysterious massage from East Asia(CHINA).it can cure cure Erectile dysfunction,can let their life better.This video from mainland of China,so the language is Chinese mandarin.but you can see English show on the video too.Tiedang gong means kongfu of Iron penis&balls.

Lower Limb Physical Examination

A brief description of hypertensive emergencies including its definition, risk factors, clinical manifestations and management