Glans is the sensitive bulbous structure at the distal end of the penis. Seminiferous tubules are found inside the testes. The germinal epithelial cell that forms three layers also makes it up. Seminal vesicles are paired, highly coiled, tubular structure. It’s an hollow, expandable, muscular organ.
In both muscle types there are two types of filaments: thick and thin. Within skeletal muscle, actin and myosin are arranged in myofibrils. Thin filaments in skeletal muscle are formed from filamentous actin, nebulin, tropomyosin and troponin. The length of thin filaments is defined by nebulin to form filaments of 1µm in length (Martini). Thick filaments are composed of “about 300 myosin molecules, each made up of a pair of myosin subunits twisted around one another”.
The male urethra is approximately 18-20 cm long. The urethra allows the passage of both urine and sperm. There are two main parts of the penis; the root and body. The three main parts of the root of the penis are, the midline bulb, and the left and right crura on either side of the bulb. While the body is formed by three cylindrical masses of erectile tissue, they are the corpus spongiosum in the midline, and the two-corpus cavernosa on either side.
The large intestine which encircles the small intestines consists of the cecum; appendix; ascending, transverse, descending and sigmoid colon; rectum; and anal canal1. The large intestine differs from the small intestine anatomically by the presence of four features1: 1. Omental appendices: omental-like peritoneum covered fat accumulations 2. Teniae coli: thickened bands of smooth muscle which begins at the base of the appendix as one one band and then separates into three bands to run the length of the rest of the large intestine up until the recto-sigmoid junction where they once again become a merged longitudinal layer around the rectum 3. Haustra: sacculation/pouches within the semilunar folds 4.
All fibrous proteins have different structural properties, which suit it to the role it plays in the organism’s body. Elastin, Collagen and Keratin are all strong and inelastic. Actin and Myosin however are contractile this meaning that they become shorter and narrower. Proteins are found all over the body. Many spiral-shaped polypeptide molecules becoming linked together in parallel lines by cross-bridges forming between them form the fibrous proteins long rope like structure.
At the point where the small intestine empties into the colon is a large pouch, called the cecum. Extending from the cecum a little underneath this point is a slender tubular sac, the appendix. The wall of the colon involves three distinct layers. The innermost layer is a smooth mucous coat having many small glands. Below this layer is the submucosa coat, containing several blood and lymph vessels surrounded in loose connective tissue.
Breast tissue has an axillary tail which extends into the armpit region. Most breast cancer originates here. The nipple is usually level with the fourth intercostal space in men and nulliparous women. The connective tissues (suspensory or Cooper's ligaments) and fat help protect a network of milk producing glands and blood vessels. The Cooper's ligaments divide the breast into compartments of fat.
The spermatozoa (sperm) includes four main parts of the male body which are the penis , uretha , vas defences , and cowper’s gland . Testes is where the sperm
Cell Types There are three major cell types of connective tissue: Fibroblasts, Macrophages, and Masts. Fibroblasts are the most common type. They are large and star-shaped, and they are fixed in position. The function of fibroblasts is to produce fibers. Macrophages are phagocytic cells (they eat other cells), and they are wandering.
The inside you have a thick mesh of muscular fibers. This is also smooth, and very even. It is very red in color, unlike the outside which is of brownish-purplish coloring. It is more red in color because it has tiny blood vessels. The kidneys are located in the posterior part of the abdomen, on both sides of the vertebral column.