A+P I exam 2 review
describe the two bone textures in bones.
compact and spongy
what are the various protections provided by the integumentary system?
regulate body temperature protect from UV rays retain body fluids eliminate waste products
what is the function of adipose tissue?
stores energy in the form of fat
how does the nail grow?
cells at the root will grow and push the old cells out
which specific parts of the body are made of fibrocartilage?
external ear auditory tube epiglottis
which main part of the nervous system contains 99% of the neurons?
interneurons
what are the functions of each kind of cell present in the epidermis?
keratinocytes make keratin melanocytes make skin pigments langerhans cells make immune cells Merkel cells make touch sensors
how does hair grow?
new cells form at the bulb. the cells will stick together and harden. the full strand of hair developed from the cells hardening over time.
describe the functions of the four types of bone cells.
osteoblasts, bone lining cells, osteocytes, and osteoclasts functions: locomotion, support and protection of soft tissues, calcium and phosphate storage, and harboring of bone marrow
what is the vascularization of each CT layer of the dermis?
papillary layer is richly vascularized reticular layer is poorly vascularized
what glands are present in the skin and what does each gland secret?
sebaceous glands- oils sweat glands - eccrine apocrine - arm pit, butt, genitals modified sweat glands - mammary glands
name three different touch sensors and their locations in the skin.
Merkel cell, epidermis meissners corpuscle, papillary layer of dermis hair root plexus, reticular layer of dermis
