Reflect the skin of lateral and medial flaps on their respective sides. The skin of the intermediate flap is reflected distally towards the distal palmar crease. Further the skin of middle finger is to be reflected on either side. • Remove the superficial fascia to clean the underlying deep fascia. • Deep fascia is modified to form the flexor retinaculum at wrist, palmar aponeurosis in the palm, and fibrous flexor sheaths in the digits.
Each tissue was identified. The results are as follows: • Epithelial Tissue - The epithelial tissue covers majority of the body surface and also makes up the lining of some internal organs. This tissue is responsible for the protection of the body from dust, dirt, bacteria and other organisms that lie outside the body, it may also be changed/modified to glands that produce mucus, hormones, enzymes and etc. , also all epithelial cells are supported by a basement membrane underneath it. - There are 2 different classifications of epithelial tissue, the types of cell (squamous, cuboidal, columnar) and the number of layers (simple- one layer, stratified- two or more layers, pseudo stratified- one layer but it looks like there’s more than one), but there is also one special type of epithelial tissue which is called transitional epithelial tissue.
Gastric chief cells also secrete gastric lipase which continue the digestion of triglycerides into diglycerides, monoglyceride and free fatty acids. The lipase catalyzed hydrolysis of milk triglycerides into free fatty acids, monoglycerides and glycerol is essential for eﬃcient absorption of the fat by enterocytes. The stomach churns the milk, and the milk leaves the stomach as liquid called chyme. The chyme passes through the pyloric sphincter and into the duodenum of the small intestine. When chyme enters the duodenum, the duodenum secretes the hormone cholecystokinin.
These receptors provide important information to the brain through sensory neurons. With this, the brain is able to analyze the temperature, pain and pressure of the object which had contact to the skin. The largest touch sensors we have is the Pacinian Corpuscle or lamellar Corpuscle located on the lowest layer of skin - the hypodermis. It responds to vibrations on the skin, allowing the sensory neurons (which originate in the spinal cord and stay at the bottom of
2. Posterior neurophysis : develops from the neuroectoderm of the diencephalon. The posterior pituitary develops in contiguity with the hypothalamus, axons run continuously between these two organs. The pituitary stalk connects the posterior pituitary to the hypothalamo- hypophyseal tract (magnocellular pathway). 3.The pars intermedium, an intermediate lobe, lies between the anterior and posterior lobes.
Oedema, redness, heat and pain can be observed. Proliferative Phase Granulation tissue which is made up of collagen and extracellular matrix will be formed at the wound. Granulation tissue is a richly vascular connective tissue containing new capillaries (formed by angiogenesis), proliferating myofibroblasts and a variable number of inflammatory cells such as macrophages and plasma cells. This acts as a barrier to infection and a frame where new tissue can grow. Essential nutrients for new tissue growth are also supplied by the granulation tissue.
P4 – Describe the three structures of the skeletal muscle (Epimysium, Perimysium and Endomysium) There are three structures of the skeletal muscle: Epimysium is a thick layer of irregular connective tissue that pulls the entire muscle as well as protecting the muscle from friction that may be caused by other muscles and bones surrounding them. Also, it is the fibrous tissue which covers and surrounds skeletal muscles. The Epimysium carries on past the end of bones in order to create muscle tendons. Perimysium surrounds a bundle of muscle fibres, it is a casing of connective tissue. Endomysium is found within a muscle and it contains nerves and capillaries.
This provides an additional level of toughness in this region of thick skin. Stratum granulosum This is a thin layer which consists of two to five rows of flattened rhomboid cells. The keratohyaline granules are present in the cytoplasam and this protein is the precursor of keratin. Stratum
Hair has two distinct parts: the hair bulb (root), the active part of hair where new hair is formed, and the shaft, the visible yet inside part of hair that is sunk in a follicle beneath the skin. As cells in the base of the follicle are pushed up, they harden and undergo pigmentation, the basis of hair color. Hair is made of three layers: the cuticle, cortex, and medulla. The cuticle consists of tightly packed, overlapping, colorless cells. The cortex contains varying amounts of two natural color pigments that determine a person's hair color.