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Today on Crash Course Anatomy & Physiology, Hank breaks down the parts and functions of one of your body's unsung heroes: your epithelial tissue.
Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!
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Chapters:
Introduction 00:00
Proper Epithelium & Glandular Epithelium 1:38
We're All Just Tubes! 2:12
Cell Shapes: Squamous, Cuboidal, or Columnar 3:34
How Form Relates to Function 4:15
Layering: Simple or Stratified 5:26
Epithelial Cells: Apical & Basal Sides 7:06
Glandular Epithelial Tissue Forms Endocrine & Exocrine Glands 8:20
Review 9:16
Credits 9:54
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External cephalic version is a process by which a breech baby can sometimes be turned from buttocks or foot first to head first. External cephalic version (ECV) is a manual procedure that is advocated by national guidelines for breech presentation singleton pregnancy, in order to enable vaginal delivery.
Purpose: To evaluate the results of LASIK and IntraLASIK treatment in myopic patients with nystagmus. Methods: Eight patients with congenital nystagmus (16 eyes), from 23 to 49 years of age, underwent LASIK surgery. Corneal flaps were created using either the Hansatome microkeratome or the Intral...ase femtosecond laser. The ablations were performed with the Bausch & Lomb excimer laser with an active tracking system. In some patients, the eyes were fixated with forceps or a fixation ring during the laser ablation. Results: The refractive errors were corrected in all cases. There was no decentration or loss of best corrected visual acuity greater than 1 line. In 56% of the eyes, the post-operative uncorrected visual acuity was better than the best spectacle corrected-visual acuity (BSCVA). 62.5% of the eyes improved their BSCVA. The overall visual performance was improved in all the patients. One patient that did not not drive before become eligible to get a driver license after the surgery. Conclusions: Selected patients with myopia and congenital nystagmus may benefit from laser refractive surgery. Laser refractive surgery may be safely and accurately performed by using either the Hansatome microkeratome or the Intralase femtosecond laser and an active tracking system with or without mechanical fixation. Certain patients improve their BSCVA post-operatively.
Ever considered getting laser eye surgery, but didn’t know how it worked? Allow us to help!
There are three different main types of laser eye surgery: LASIK, SMILE, and Surface Laser Treatments, and each can be explained pretty easily.
LASIK uses two lasers to open up a thin flap on the surface of the cornea, and then reshapes the cornea underneath. The flap is then placed back over the reshaped cornea, and heals independently with time.
SMILE uses one laser to reshape the cornea through a small, self-healing hole.
And Surface Eye Treatments remove the clear skin over the eye, to then reshape the cornea underneath with - you guessed it - a laser!
✨This video is on the structure and functions of the three types of cartilage (Hyaline, Elastic and Fibrocartilage). I hope it helps! ☀️
🌟What's in this video?
0:00 - Intro
0:07 - Connective Tissue Recap
1:16 - Structure of Connective Tissue
1:57 - Structural Components of Cartilage
3:38 - Types of Cartilage
3:49 - Hyaline Cartilage
8:05 - Elastic Cartilage
8:55 - Fibrocartilage
✨ Other videos you may need:
🔅 Connective Tissue : https://youtu.be/xw_ALdt5n-A
🔅 Collagen : https://youtu.be/3e2JYMNS_W4
🔅 Ossification: https://youtu.be/86V9SNWD_No
🔅Histology: https://www.youtube.com/playli....st?list=PL1rG930trF2
💫 For more videos like this, subscribe to my channel!
Byte Size Med: https://youtube.com/channel/UC....ZghvlgylH3r_CWfA18eF
📚Factual References & for Further Reading:
- DiFiore's Atlas of Histology
- Junqueira's Basic Histology
- Gartner's Concise Histology
- Openstax Anatomy and Physiology
https://openstax.org/details/b....ooks/anatomy-and-phy
- Openstax Biology
https://openstax.org/details/books/biology-2e
(The last two are links to open-source references. They are NOT affiliate links)
🌤 Note:
These are just a collection of my notes. So use them the way you would use borrowed notes from a friend. 📝
The images in this video are hand-drawn for illustration and explanation only.✍️ Hence, they may not be anatomically accurate. I am just one person making these videos. If there are any errors, that is unintentional. I try super hard to avoid them. Please let me know if you find any, so it gets clarified for other viewers. Science constantly evolves and changes. New discoveries are made everyday. So some of the information in these videos may become outdated. If you notice that, please let me know so I can update them.
⚡️Disclaimer:
These videos are NOT a substitute for a medical textbook. Textbooks are written by experts (which I do not claim to be), edited, proofread and referenced. Please use them.
The information has been sourced from multiple references as mentioned above. I draw all the pictures myself. But if I have inadvertently infringed on any copyright, that is completely unintentional. I only make these videos to impart education. If I have accidentally violated copyright in any way, do let me know so I can make the necessary changes or give credit to anyone who is owed the same.
These videos are NOT intended for patient education. They are NOT a substitute for diagnosis and treatment by a licensed medical professional. Always seek the advice of a qualified health care provider for any questions you may have regarding any medical condition, so that they can address your individual needs.
🔅They are ONLY meant to help students of medicine and health sciences with studying, and should be used for just that purpose and absolutely nothing else.
Byte Size Med. All Rights Reserved.
Liposuction in tummy tuck requires special planning and technique. I need to ensure that the blood circulation is well maintained for good healing. Yet proper liposuction is important to have a nice flat and contoured tummy.
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49-years old patient complaining of cough, fever and pleuritic pain for 2 weeks. At admission he was febrile and tachypnic. Chest X-Ray showed left pleural effusion. Thoracocentesis revealed purulent fluid. Chest CT-scan showed large and loculated left pleural effusion and pleural thickening. VATS decortication was performed through three incisions.
A bilateral complete cleft lip, which has been previously treated with nasoalvoelar molding, is repaired with the Millard-Mulliken technique, which employs reconstruction of the orbicularis oris muscle by advancing bilateral muscular segments. This tutorial for medical professionals was developed to supplement learning of a common surgical technique and is not intended to replace formal surgical training. This slideshow is primarily intended for use on tablets or larger screens. Some detail might be lost on mobile screens.
Open heart (coronary artery bypass, or CABG) surgery is performed in order to reroute, or "bypass," blood around blocked arteries, thereby improving the supply of oxygen-rich blood to the heart. Surgeons usually use an artery from the chest wall to construct the "detour" around the blocked part of the artery. Veins from the legs are also used.
A uterine fibroid (also uterine leiomyoma, myoma, fibromyoma, leiofibromyoma, fibroleiomyoma, and fibroma) (plural of ... myoma is ...myomas or ...myomata) is a benign (non-cancerous) tumor that originates from the smooth muscle layer (myometrium) and the accompanying connective tissue of the uterus. Fibroids are the most common benign tumors in females and typically found during the middle and later reproductive years. While most fibroids are asymptomatic, they can grow and cause heavy and painful menstruation, painful sexual intercourse, and urinary frequency and urgency. Uterine fibroids is the major indication for hysterectomy in the US.[2] Fibroids are often multiple and if the uterus contains too many leiomyomatas to count, it is referred to as uterine leiomyomatosis. The malignant version of a fibroid is uncommon and termed a leiomyosarcoma.
An abscess is a collection of pus. Pus is a thick fluid that usually contains white blood cells, dead tissue and germs (bacteria). The usual cause of an abscess is an infection with bacteria. Certain bacteria are more likely to be 'pus-forming' as they make chemicals (toxins) that can damage the body's tissues.
Function and Anatomy: The hip is a ball and socket type joint, formed by the articulation of the head of the femur with the pelvis. Normal range of motion includes: abduction 45 degrees, adduction 20-30 degrees, flexion 135 degrees, extension 30 degrees, internal and external rotation. Hip pathology can cause symptoms anywhere around the joint, though frequently pain is anterior and radiates to the groin region. Additionally, pathology outside of the hip can be referred to this region. History and exam obviously help in making these distinctions.
Treatment may not be needed for an eschar if it is part of the natural healing process. However, if an eschar looks like it may have a wound infection – symptoms can include oozing fluid such as pus or blood, your clinician will likely recommend topical treatment or debridement to help control and remove the infection.