Lesson 31 Terms Flashcards
Adenoids
an area of the body where lymph nodes are clustered together creating a protective ring against invaders that may enter through the mouth or nose
Arrector pili
smooth muscles attached to hair follicles
Basophils
produced in the bone marrow and are responsible for allergic reactions
Chyle
the term used when lymph fluid collects fat it turns a milky color
Collagen
protein that give skin the ability to stretch and return to its original shape
Dermis
second layer of skin tissue
Elastin
protein that give skin the ability to stretch and return to its original shape
Eosinophils
produced in the bone marrow and release a chemical that attacks large multicellular parasites
Epidermis
top layer of skin tissue
Epithelial cells
skin cells; rapidly reproduce to replace cells that are lost by pushing cells to the surface
Germinative cells
Living cells that reproduce rapidly
Hair follicle
tiny pockets in the dermis from which hair grows
Integumentary system
a) Includes: skin, hair, and nails
b) Function: protection and sensory input
Keratin
hard protein material found in the epidermis, hair, and nails
Lingual tonsils
an area of the body where lymph nodes are clustered together creating a protective ring against invaders that may enter through the mouth or nose
Lymph nodes
act as filtering and monitoring stations that clean the lymph of dead cells and foreign invaders
Lymph vessels
move the fluid to the lymph nodes
Lymphocytes
- T-cells: made and mature in the thymus gland; attack invaders directly
- B-cells: made in the bone marrow and mature in the spleen; make antibodies to fight specific invaders
- Natural killer cells: recognize tumor cells and cells that have been infected with viruses and kill the infected cells
Melanin
skin pigment
Melanin
skin pigment
Melanocytes
produce melanin
Monocytes
produced in the bone marrow, are the largest white blood cells in the human body
Neutrophils
produced in the bone marrow and respond quickly to hold off pathogens
Palatine tonsils
areas of the body where lymph nodes are clustered together creating a protective ring against invaders that may enter through the mouth or nose
Sebaceous glands
secrete an oil called sebum which softens and waterproofs your skin
Sebum
an oil secreted by the sebaceous glands which softens and waterproofs your skin
Spleen
the largest lymphatic organ
Squamous
flattened dead cells resembling scales
Sweat glands
help regulate body temperature and rid the body of waste products
T-cells that attack invaders enter…
the bloodstream and reside in the lymphatic tissue
Vestigial organs
organs that do not appear to have a function or purpose
