Lab 5

Kris Porter Professor Joanne Oellers October 4, 2015 Lab 5 Chicken wing Dissection Section 1. The first observation I noticed right off hand was of course the epidermis. It had a rough texture from the feather follicles and the skin was really light in color. Second was the small blood vessels that lye between the epidermis and dermis. Third was the dermis that had the root follicles for the feathers. Lastly was possibly the hypodermic that had small adipose tissue.

4 observations of connective tissue. Green pin- Tendon, dense tissue, strong, lower layer of skin. White pin- Loose tissue, surrounds organs,muscles,blood vessels, flexible and moderately strong. Pink pin- Cartilage, maintains shape and resists compression, Lining of joints. Purple pin- Adipose tissue, stores energy in the form of fat, under skin and around internal organs. These are examples of both fibrous which provides strength and flexibility and special which is a group of bone, cartilage,and bone connective tissues. The two observations I made about the fat tissue outside the skin were the texture soft and dense and the color. The yellow color being different from the white fat tissue under the skin. The biological term Adipocyte is used in the storage of fat and are mainly composed of adipose tissue and specialize in energy fat storage and absorb important nutrients. The two observations I noticed with the muscle bundles arrangements were the tricep and bicep same as a human and that they are antagonistic to one another. This sketch is of an individual muscle fiber. They can range in diameter from 10 to 120 micrometers. They are nearly invisible to the naked eye.

The function of this muscle tissue is to provide stability and structure along with thousands of other muscle fibers. This muscle fiber has two distinct characteristics first each cell contains one nucleus and two the muscle structures are parallel which are called myofibrils. Muscle and nerve. Pink pin - marks the tricep muscle. Purple pin- marks the muscle nerve

Tendon to Muscle & Tendon to Bone Purple pin- Shows to attachment points of a tendon to a bone. Pink pin- Shows a tendon attached to a muscle. When I was going to sketch this I explored a little more and was able to find this great example. This is showing the different tendon attachment points.

Ligaments and tendons serve different purposes and vary in shape and size. Ligaments serve as connectors linking bones to bones. Tendons serve as connectors linking muscles to bones. Although these may look the same in a way they do have different minor characteristics. Ligaments are usually long stringy dense fibers that create bands of tough fibrous connective tissue. Ligaments are fibers that criss-cross and overlap. Tendons look similar but the fibers run parallel and twist. The bone structure starting from left to right. Purple pin (far left) - Humerus White pin- Elbow Yellow pin- Radius Blue pin-Ulna White pin-Wrist Yellow pin- Thumb (alula) Pink pin- Hand Blue pin- Digits

The elbow in a chicken wing is a synovial joint which can move freely. The motion is called a hinge joint cause it can only move on one plane. When the radius and ulna were separated the shiny, slightly slippery, ends of the bones were the cartilage. This is under special connective tissue. This helps bones move without grinding together causing trauma. Bones provide the frame to keep a body supported, they provide safety for important organs, and blood production through the marrow. The soft material in bones is called bone marrow. There are two types, yellow and red. red is used to create new red blood cells, and yellow creates white blood cells. Three types of cells are: Osteoblasts Osteocytes Osteoclasts

References Complete Soccer Training. Blogspot.Web.4 Oct.2015 http://completesoccertraining.blogspot.com/2012/05/functional-anatomy-of-skeletal-muscle.html Johnson, Michael D. Human Biology: Concepts and Current Issues. 4th ed. San Francisco: Pearson Benjamin Cummings, 2008. Print.