md0006 - BASIC HUMAN ANATOMY.pdf - Raems.com

13. Sebaceous glands produce an oily substance. Its function is to lubricate the
skin and hairs and to keep them flexible. The sebaceous glands are usually
found as a part of the walls of hair follicles. (para 3-6b)
14. In mammary glands, milk ducts connect each nipple with lobes of glandular
tissue. Fat and fibrous CT fill in the spaces among the lobes. (para 3-6c)
15. Nails are found on the ends of the digits. Nails help to protect the ends of
these digits. The nail itself is made up of cornified (hardened) outer cell layers
of the epidermis. The nails grow continuously from their roots. (para 3-7)
16. The term serous refers to a watery-type fluid. Serous cavities are sacs lined
with serous membranes. These cavities serve as lubricating devices.
(para 3-12)
17. Each bursa is a small sac located between two moving structures, usually a
muscle moving over a bony surface. The bursa reduces the friction between
the two structures. The serous membrane lining the cavity within a bursa is a
simple squamous epithelium and it secretes a serous fluid into the serous
cavity. (para 3-13)
18. Each lung is encased in a serous cavity called the pleural cavity. The heart
lies in a serous cavity called the pericardial cavity, the intestines move freely
within the peritoneal cavity. (para 3-14a)
End of Lesson 3
MD0006 3-13