Breast

Breast, in human females, are two glandular organs that secret milk for feeding newborn infants. Such gland are present in all mammals and are known in general as mammaries. Physiologycally, they are highly modified sweet glands. No other animals posses such glands, and no related precedents exist in other classes of vertebrates.

Rudimentary breasts are present in both human sexes at birth. No further development takes place in males during normal growth, but full development occurs in females in the early childbearing period. A projection called a nipple is found at the tip of each breast in both men and women. It is surrounded by a pigmented areas, the areola, that enlarges and deepens in color on pregnancy.

Structure
The female human breast consists mainly of a round mass of glandular tissue comprising about 15-20 lobes, each having a duct leading to an opening on the nipple, the duct system and glandular tissue fully develop with pregnancy. The amount of fat sheathing the glandular tissue determines the size of the breast. Connective tissue from the foundation or framework of the breast. The layer of ligaments directly beneath the breast sends strands into the breast itself, providing the firm consistency of the organ. The deep layer of connective tissue sends strands in the opposite direction into the covering of the chest muscles.

Other Organs:

Comments

Post a Comment

Popular posts from this blog

Human Organs

Image
The human organs is drawn such as on the picture belows: Each organ have certain function to our body, if there is a disturbance to certain organ function the body will feel inconvenience and actually the nerve will give an alarm through the network and will sent to the brain. Our brain than should think about what the abnormal condition, and should have any solution to maintain an abnormal situation.
Read more

Nose

The nose, the site of the sense of smell is the organ through which mammals take in air. It is supported by cartilage and bone, covered with skin , lined with a mucous membrane, and provided with muscle. A nasal septum divides it into passages, each of which begins with a vestibule and contains a respiratory and olfactory region. The lining of the vestibule is continuous with the skin and contains hairs, sweat glands, and sebaceous (oil producing) glands . The respiratory region includes nearly all of the septum and the lateral walls of the nose. Goblet cells, which produce and secrete a watery mucus, are present in the lining, as is a type of erective tissue, composed of large, thin-walled veins whose blood supply serves to warm incoming air. The olfactory region is located on the superior concha and adjacent septum. Olfactory cells are present in its lining and have delicate, slender process (modified cilia) at their free surface. Odors from chemicals in the air are received by
Read more

Nervous System on Sole of Foot

Image
The palms of the hands and the soles of the feet have some sweat glands than any other part of body. Excessive hand sweating is the most common sweating problem, sweaty hands usually come along with sweaty feet. When sweaty hands and feet become a severe problem, they are called palmar hyperhidrosis and pedal hyperhidrosis respectively. This tend happen begin in early childhood and become worse after teenage years and early adulthood. The sweaty hands and feet are likely to develop cracking and scaling of the skin, blister, frostbite , warts and fungal infections . According to traditional Chinese medicine, the spleen system controls the muscles and the limbs, the four extremities must be nourished by the nutrient essence transformed and transported by the spleen. Several nervous system on the sole of foot as on the picture below:
Read more

Muscle

Muscle tissue, which comprises about 40 percent of human body weight, consist of threads, or muscle fibers, supported by connective tissue. All living cells can move to some degree, but this ability is highly developed in muscles, which act by fiber contraction; the fibers can shorten to two thirds of their resting length. Muscle vary greatly in structure and function in different organs and animals. Based on structure there are two types of muscles; smooth and s treated, "Involuntary", or smooth, muscles are found in the walls of all the hollow organs and tubes of the body (for example, blood vessels and intestines). There react slowly to stimuli from the autonomic nervous system. The "voluntary," or striated, muscles of the body attach mostly to the bones to move the skeleton, and under the microscope their fibers have a cross striped appearance. Striated muscle is capable of fast contractions. The heart wall is made up of special muscle fibers (cardiac muscle),
Read more