Join the Amoeba Sisters a they explore different muscle tissues and then focus on the sliding filament theory in skeletal muscle! This video also briefly talks about muscle naming, some vocabulary (such as agonists and antagonists) before focusing on the sliding filament model. Video also mentions general roles of tropomyosin and troponin.
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Table of Contents:
00:00 Intro
0:39 Muscle Tissue Types
1:58 Muscle Characteristics
2:33 Skeletal Muscle Naming and Arrangement
3:26 Actin Myosin and Sarcomere
4:32 Sliding Filament Model
6:55 Tropomyosin an Troponin
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Factual References:

Betts, J. Gordon, et al. “10.3 Muscle Fiber Contraction and Relaxation - Anatomy and Physiology 2e | OpenStax.” Openstax.org, 20 Apr. 2022, openstax.org/books/anatomy-and-physiology-2e/pages/10-3-muscle-fiber-contraction-and-relaxation.

Urry, Lisa A, et al. Campbell Biology. 11th ed., New York, Ny, Pearson Education, Inc, 2017.
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Further Reading Recommendations:

What about I and A bands? What actually initiates the power stroke? How does calcium get released and from where? Remember, there is a lot more detail! We recommend this page from Openstax to learn more:
https://openstax.org/books/bio....logy-2e/pages/38-4-m

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Use warm water and sea salt. Soak the wart for 10 to 15 minutes in warm salt water to moisten the skin. Scrape the dead skin layers off the wart using a nail file, pumice stone or mild sandpaper. You could also use your fingers, but wash them thoroughly before and after, as warts can easily spread.

Hepatitis A is a highly contagious liver infection caused by the hepatitis A virus. The virus is one of several types of hepatitis viruses that cause inflammation and affect your liver's ability to function. You're most likely to contract hepatitis A from contaminated food or water or from close contact with someone who's infected. Mild cases of hepatitis A don't require treatment, and most people who are infected recover completely with no permanent liver damage. Practicing good hygiene, including washing hands frequently, is one of the best ways to protect against hepatitis A. Vaccines are available for people most at risk.

Watch that video to know the Premature Ejaculation Causes and Cures

Watch that video to know What is Vaginal Discharge and How To Get Rid Of It?

10 Biggest Babies Ever Born

Biliary Colic Examination

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

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- 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 Penile Lengthening and Girth Enhancement Plastic Surgery

Shoulder dystocia is a specific case of obstructed labour whereby after the delivery of the head, the anterior shoulder of the infant cannot pass below, or requires significant manipulation to pass below, the pubic symphysis. It is diagnosed when the shoulders fail to deliver shortly after the fetal head. Shoulder dystocia is an obstetric emergency, and fetal demise can occur if the infant is not delivered, due to compression of the umbilical cord within the birth canal. It occurs in approximately 0.3-1% of vaginal births. Contemporary management of shoulder dystocia requires a calm operator and a well-thought-out plan of action. It is imperative that if not already present, help is summoned immediately after shoulder dystocia is recognized. This help may include additional nursing staff, an anesthesiologist, a pediatrician or neonatologist and an additional obstetrician or midwife. Future coordination may demonstrate that rapid response teams are best suited to attend to this emergency.

Thanks to a new, state-of-the-art procedure for total knee replacement developed by surgeons at the Detroit Medical Center's Sinai-Grace Hospital, the rehabilitation time for patients has been reduced from six months to six weeks. ~ Detroit Medical Center

Multiple studies demonstrate the safety of propofol in pediatric EDPS. Each has identified a drop in blood pressure and transient hypoxemia as the most frequent complications. In all of the studies in which hypotension was identified there was no evidence of poor perfusion. The hypoxemia in all of these studies quickly responded to minimal intervention with no apparent lasting complications. Although these were pediatric studies, the results were very similar to ours in complication rates and sedation times. Our study did not demonstrate the frequency of decreased blood pressure seen in these pediatric studies but had similar hypoxemia rates.

Histological features and cellular biology of exocrine glands. This video is a part of our Histology Video Course (https://youtube.com/playlist?l....ist=PLnr1l7WuQdDynxT

Additional YouTube Content
Biochemistry videos: https://youtube.com/playlist?l....ist=PLnr1l7WuQdDzCUC
Anatomy Videos: https://youtube.com/playlist?l....ist=PLnr1l7WuQdDz2dK
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Watch that video to know the Serious Side Effects of STEROIDS on Human Body

What is Venipuncture? While venipuncture can refer to a variety of procedures, including the insertion of IV tubes into a vein for the direct application of medicine to the blood stream, in phlebotomy venipuncture refers primarily to using a needle to create a blood evacuation point. As a phlebotomist, you must be prepared to perform venipuncture procedures on adults, children, and even infants while maintaining a supportive demeanor and procedural accuracy. Using a variety of blood extraction tools, you must be prepared to respond to numerous complications in order to minimize the risk to the patient while still drawing a clean sample. In its entirety, venipuncture includes every step in a blood draw procedure—from patient identification to puncturing the vein to labeling the sample. Patient information, needle placement, and emotional environment all play a part in the collection of a blood sample, and it's the fine details that can mean the difference between a definite result and a false positive. After placing the tourniquet and finding the vein, it's time for the phlebotomist to make the complex choice on what procedure will best suit the specific situation. Keeping this in mind, it should be noted that the following information is not an instructional guide on how to perform these phlebotomy procedures. Rather, the information below is intended to serve as an educational resource to inform you of the equipment and procedures you will use. Venipuncture Technqiues Venipuncture with an Evacuated or Vacuum Tube: This is the standard procedure for venipuncture testing. Using a needle and sheath system, this procedure allows multiple sample tubes to be filled through a single puncture. This procedure is ideal for reducing trauma to patients. After drawing the blood, the phlebotomist must make sure the test stopper is correctly coded and doesn't contact exposed blood between samples. Venipuncture with a Butterfly Needle : This is a specialized procedure that utilizes a flexible, butterfly needle adaptor. A butterfly needle has two plastic wings (one on either side of the needle) and is connected to a flexible tube, which is then attached to a reservoir for the blood. Due to the small gauge of the needle and the flexibility of the tube, this procedure is used most often in pediatric care, where the patients tend to have smaller veins and are more likely to move around during the procedure. After being inserted into a vein at a shallow angle, the butterfly needle is held in place by the wings, which allow the phlebotomist to grasp the needle very close to the skin. Phlebotomists should be careful to watch for blood clots in the flexible tubing. Venipuncture with a Syringe: This technique is typically only used when there is a supply shortage, or when a technician thinks it is the appropriate method. It uses the classic needle, tube, and plunger system, operating in a similar manner to the vacuum tube but requiring multiple punctures for multiple samples. Additionally, after the blood is drawn it must be transferred to the appropriate vacuum tube for testing purposes. If you choose to use this method, remember to check for a sterile seal, and use a safety device when transferring the sample. Fingerstick (or Fingerprick): This procedure uses a medical lance to make a small incision in the upper capillaries of a patient's finger in order to collect a tiny blood sample. It is typically used to test glucose and insulin levels. When performing a Fingerstick, the phlebotomist should remember to lance the third or fourth finger on the non-dominant arm. Never lance the tip or the center of the finger pad; instead, lance perpendicular to the fingerprint lines. Heelstick (or Heelprick): Similar to the Fingerstick procedure, this process is used on infants under six months of age. A medical lance is used to create a small incision on the side of an infant's heel in order to collect small amounts of blood for screening. As with a Fingerstick, the incision should be made perpendicular to the heel lines, and it should be made far enough to the left or right side of the heel to avoid patient agitation. Before performing a Heelstick, the infant's heel should be warmed to about 42 degrees Celsius in order to stimulate capillary blood and gas flow. Therapeutic Phlebotomy: This involves the actual letting of blood in order to relieve chemical and pressure imbalances within the blood stream. Making use of a butterfly needle, this therapy provides a slow removal of up to one pint of blood. Though the blood removed is not used for blood transfusions, the procedure and concerns are the same as with routine blood donation. As with any phlebotomy procedure, one should pay close attention to the patient in order to prevent a blood overdraw. Bleeding Time: A simple diagnostic test that is used to determine abnormalities in blood clotting and platelet production. A shallow laceration is made, followed by sterile swabbing of the wound every 30 seconds until the bleeding stops. Average bleed times range between one and nine minutes. As a phlebotomist, you should familiarize yourself with the application and cross-application of these procedures in order to recognize when a procedure is necessary, and what the risks are for each.

Ultrasound of Heart

Small cell lung cancer, which occurs almost exclusively in smokers, is a malignancy characterised by rapid doubling time, high growth fraction and widespread metastasis at presentation. In this presentation, we will briefly discuss the classification of pulmonary Neuro-endocrine tumours by the World Health Organisation followed by a detailed discussion of the clinical features, lab evaluation and management of SCLC, both limited and extended stage. The frontline therapy in small cell lung cancer is etoposide and cisplatin along with thoracic radiotherapy and prophylactic cranial irradiation in patients who have a good response to therapy. Hyperfractionation of radiotherapy may provide some benefit but is also associated with increase incidence of complications. Newer agents for SCLC include Vandetanib and immunotherapy molecules, such as Iplimumab and nivolumab.

A video from Physical Exam Series of Loyola University Health System, Chicago showing the medical examination of the abdomen

Middle cerebral artery syndrome is a condition whereby the blood supply from the middle cerebral artery (MCA) is restricted, leading to a reduction of the function of the portions of the brain supplied by that vessel: the lateral aspects of frontal, temporal and parietal lobes, the corona radiata, globus pallidus, caudate and putamen. The MCA is the most common site for the occurrence of ischemic stroke.[1] Depending upon the location and severity of the occlusion, signs and symptoms may vary within the population affected with MCA syndrome. More distal blockages tend to produce milder deficits due to more extensive branching of the artery and less ischemic response. In contrast, the most proximal occlusions result in widespread effects that can lead to significant cerebral edema, increased intracranial pressure, loss of consciousness and could even be fatal.[1] In such occasions, mannitol (osmotic diuretic) or hypertonic saline are given to draw fluid out of the oedematus cerebrum to minimise secondary injury. Hypertonic saline is better than mannitol, as mannitol being a diuretic will decrease the mean arterial pressure and since cerebral perfusion is mean arterial pressure minus intracranial pressure, mannitol will also cause a decrease in cerebral perfusion. Contralateral hemiparesis and hemisensory loss of the face, upper and lower extremities is the most common presentation of MCA syndrome.[1] Lower extremity function is more spared than that of the faciobrachial region.[2] The majority of the primary motor and somatosensory cortices are supplied by the MCA and the cortical homunculus can, therefore, be used to localize the defects more precisely.it is important to note that middle cerebral artery lesions mostly affect the dominant hemisphere i.e. the left cerebral hemisphere.