Your 80 year-old great aunt, Persis, was placing a canning jar on the top shelf of her pantry when she stepped awkwardly off the stool and twisted her leg at the hip. She felt a sharp pain in her hip and, after collapsing to the floor, found she could no longer stand. She was taken to the emergency room where an X ray showed that the neck of her femur was fractured. More detailed X ray images revealed reduced bone mass in the head and neck regions of the injured femur, in the ends of other long bones of the body and in the vertebrae. Surgery was necessary to repair the fractured femur and a biopsy of the bone tissue indicated that the composition of the osteoid was normal. Healing of the fractured femur is proceeding slowly.…
6 Bones and Skeletal • Human skeleton is initially made up of cartilages and fibrous membranes as early supports – These are replaced by bone as we grow – The cartilages found in adults are in places where flexible skeletal tissue is needed Skeletal Cartilages • Contain no _______ ________ or ______, and consist mainly of water • Dense irregular connective tissue girdle of perichondrium (around the cartilage) contains blood vessels for nutrient delivery to cartilage – Nutrients diffuse through the matrix to reach the cartilage cells Skeletal Cartilages 1. Hyaline cartilages – Provide: support, flexibility, and resilience – Most abundant type – 1. Articular cartilages- covers the ends of bones and moveable joints – 2. Costal cartilages – 3. Respiratory cartilages- form the skeleton of the larynx – 4.…
Bone is a specialised, strong, flexible connective tissue and is the main component of the adult skeleton. Unlike hyaline and fibrocartilage, bone is supplied with nerves and blood vessels. Epiphyseal veins carry the blood away from the long bones of the body and periosteal arteries, which are also accompanied by nerves, carry blood to the bones. It provides support and gives the structural framework to the body, it acts as a protective cover for internal organs such as the heart, brain and lungs, it provides sites of attachment for muscles, it stores minerals such as calcium and phosphate and it contains cavities where bone marrow produces blood cells. Bone is made up of two main components, cells and the bone matrix. There are four different types of cells in the bone; osteogenic, osteocytes, osteoblasts and osteoclasts of which…
This system is constructed of bones such as, joints, tendons, ligaments, skeletal muscles, nerves, cartilage, hyaline cartilage, elastic cartilage and fibrocartilage. There are five main functions of the bones, these include:…
6. Gross Anatomy: Diagram and describe the structure of a long bone. Label the parts and describe the structure of each.…
* Cartilage- Allows bones to move freely over one another. This stops friction occurring and the degeneration of the bone. (found in small sacs called Bursa)…
The Bottom Line: If you're looking for her sister's bones, you'll have to dig deep.…
In Written in Bone, Sally M. Walker, develops many central ideas over the course of the text. One central idea is forensic anthropologists explore bones to tell the stories of the past . Another central idea is forensic anthropology is the study of human skeletal remains to understand the life and death of people in the past. The author develops these central ideas using explanations telling us how they are made using captions and photographs of Doug Owsley and more people studying bones and graves. Another way the author develops the central idea forensic anthropologists explore bones to tell stories of the past through explanations telling us how they are made.…
In the story "Bones" by J. Lee Engfer, we meet a young, 27 year old, self diagnosed hypochondriac named Lea who acts as if she doesn't appreciate life. Lea in the beginning of the story is a pessimist but towards the end we see a change in her ideas and thinking until she becomes optimistic about her life. We also meet a young spirited older woman named Thea who is vivacious and fun loving with a sense of style which makes her almost 1940's Hollywood-esque, with the neck scarves and painted on eyebrows. The story is a small look into Lea's life. We learn key points about her such as her mother passing away, and her self-diagnosed hypochondria. It's Halloween and Lea and her friend Thea go for a walk to Lake Harriet near Thea's house. Lea has an epiphany about her life. The theme of the story is about living your life to the fullest. The idea that Lea is a hypochondriac could have an even deeper meaning, such as Lea representing the oppression of society in today which is seen almost everywhere with people who do not make an effort to make their lives worthwhile.…
The bone sample has been soaking in vinegar with a pH of about 3.0 for a little over a week. The exterior of the bone remained intact the entire time. Once I removed the bone, I realized that the interior integrity of the bone was compromised. Now that the bone was exposed to the acid for such a long period of time, it was more flexible. The reason the long bone became so bendable is because the bone is largely made up of calcium salts. The vinegar broke the calcium phosphate down, leaving only collagen left. As we learned collagen is flexible so this made the bone bended easily. Calcium gives bone its strength and durability. Each time I changed the vinegar I was dumping the extracted calcium out. This shows how much of an important role calcium plays, without it bones would be flimsy. It also reveals how the structure of bone, having calcium, allows it to function properly for support and protection.…
The skeletal system is made up of cartilage and bone. Both bone and cartilage are connective tissues, that is, they are composed of cells in a matrix with intracellular fibers. Just imagine connective tissue as a gelatin salad with grapes and coconut. The grapes would represent cells, the gelatin the support material for matrix, and the pieces of coconut the intracellular fibers. By changing the amounts of each ingredient and adding extra substances, we can produce a material that is very hard like bone and can withstand weight or softer like cartilage which can be used as a cushioning material.…
Purpose: To find and pair six different muscles in the chicken wing, in order to observe and understand the details of how muscles are involved in movement.…
Are your feet still cold? Is your skin is very dry? Do you have cracks in the toenails? Check out what it means and what you can do about it.…
The Lovely Bones, was originally a mind-thrilling novel written by Alice Sebold. Then it was turned into a major motion picture in 2009 directed by Peter Jackson starring; Rachel Weisz, Susan Sarandon, Mark Wahlburg, Stanley Tucci, and Saoirse Ronan. The movie starts off heavy and dramatic. Harvey played by Stanley Tucci is a serial killer that lives right next door to the victim, Susie. He lured the young and naïve 14-year-old girl into a secret “hiding place” and refused to let her out. Susie was brutally raped and murdered and her body goes missing as long with (#) other victims tied to the same murderer. The next few months, Susie miraculously lives in spirit while her family and friends cope with the tragedy. Many scenes in this movie revolves around crime, in-justice, and a broken family which can be real life problems and not just an Hollywood fantasy.…
Functions to provides support; protects tissues; stores minerals; forms blood Composed of bones, cartilages, and Joints Axial Skeleton (80 bones) - skull, vertebrae, ribs, sternum, sacrum Protects brain, spinal cord, sense organs, and soft tissues of thoracic cavity; supports the body weight over the lower limbs Appendicular Skeleton (126 bones) - bones and girdles of the limbs, hands and feet Provides internal support and positioning of the limbs; supports and moves axial skeleton Bone Marrow – Acts as primary site of blood cell production (red blood cells, white blood cells); stores lipid reserves and mineral storage Epiphyseal plate – growth plate We have 500 bones when we are born but these fuse in the adults into 206 bones. Lever Systems (Fulcrum –pivot; load – weight; effort – force) 1st Class – fulcrum in the middle 2nd Class - effort in the middle 3rd Class - load in the middle Ligaments attach bone to bone…