d. Many nervous accessory structures are found here: 1) Cold Receptors are sensitive to cold. 2) End Organ of Ruffini is also sensitive to pressure. 3) The Hair Root Plexus is a nerve that wraps around the hair follicle and is stimulated by movement of the follicle (considered to be touch). D. Epidermal derivatives 1. Sebaceous (oil) glands are found here connected to hair
MARROW CAVITY- ENDOSTEUM- n a thin layer of connective tissue that lines the walls of the bone marrow cavities and haversian canals of compact bone and covers the trabeculae of cancellous bone. It has
Flat bones are generally thin and provides extensive surfaces for muscles attachment. Flat bones: scapula, cranial , the sternum and the ribs 3. Describe the location, composition, and function of the epiphyseal plate. Epiphyseal plate is located in the metaphysis and is composed of the hyaline cartilage and its function allows for bones to grow in length. 4.
5. Which ossification method would form a femur? The femur, which is a long bone, is formed by endochondral ossification which is the replacement of cartilage by osseous tissue. Most bones of the body are formed by this process. 6.
4. Compare and Contrast the microscopic appearance, location and function of spongy and compact bones? a. Long bones consist mostly of compact bone tissue in the diaphysis and have some amounts of spongy bone tissue in the epiphyses. Short, flat, and irregular bones consist mainly of spongy bone tissue, except at the surface, where there is compact bone.
Definition: Bones are rigid organs that constitute part of the endoskeleton of vertebrates. They support and protect the various organs of the body, produce red and white blood cells and store minerals. Bone tissue is a type of dense connective tissue. Bones come in a variety of shapes and have a complex internal and external structure, are lightweight yet strong and hard, and serve multiple functions. One of the types of tissue that makes up bone is the mineralized osseous tissue, also called bone tissue, that gives it rigidity and a coral-like three-dimensional internal structure.
In the periosteum it surrounds the bone surface wherever it is not covered by articular cartilage, it is a sheath of dense irregular connective tissue containing osteoblasts, it functions to protect the bone, assists in fracture repair, nourishes bone tissue, and serves as an attachment point for ligaments and tendons. 4- Which kind of bone marrow is in spongy bone tissue? Red bone marrow is the type of marrow found in spongy bone tissue. 5- Which ossification method would form a femur? Endochondrial ossification would form the femur.
3. Describe the location, composition, and, function of the epiphyseal plate. c. Location- shoulder, hips d. Composition- hyaline cartilage e. Function- bone growth 4. Which kind of bone marrow is in spongy bone tissue? f. Red marrow is the type of bone marrow found in spongy tissue.
They are elongated and column shaped. The nuclei are elongated and and usually found towards the base of the cells. They form the lining of the stomach and intestines. They secrete mucus to keep the surface smooth. Ciliated Columnar Epithelium are simple columnar epithelial cells but they have fine, hair like cilia on their free surfaces.
Sebum is secreted into areas like the hair follicles or the pores on the skin surface. The sebaceous gland secretes sebum in order to soften and lubricate the hair and skin and also prevent the hair from becoming brittle and it also assist with slowing down the water loss from the skin when external humidity is low. It also has a bactericidal action. In order for the skin to secrete sebum it must stimulated by certain hormones especially