ANSWERS GUARANTEE A+
✔✔What are the layers of cells within skin called? (Bottom to Top) - ✔✔1) Stratum
Basale
2) Stratum Spinosum
3) Stratum Correum
✔✔The top (outside) layer of skin is called the __. Below it is the __. - ✔✔Epidermis;
dermis
✔✔Fibrocytes - ✔✔Cells that form the connective tissue of the dermis
✔✔Melanocytes - ✔✔cells on the top of the dermis which release melanin to be
endocytosed by keratinocytes
✔✔Exocrine Glands - ✔✔ducts within the skin that reach the surface and secrete oil
and other substances
✔✔What are the four types of exocrine glands? - ✔✔Sweat, Mammary, Salivary,
Sebaceous
✔✔Secretory Epithelium - ✔✔oil like molecules at the bottom of an exocrine gland
which lubricate the hair and skin
✔✔Long Bone - ✔✔bone that is longer than it is wide
✔✔Medullary Cavity - ✔✔Cavity in the center of the bone which is filled with yellow
marrow and fat; greatly reduces the mass of long bones
✔✔The cartilage that lines the top of the bones along joints is ___________ -
✔✔hyaline cartilage
✔✔The longer, middle part of a long bone is the _________; the ends of the long bones
are the _________ - ✔✔diaphysis; epiphysis
✔✔The diaphysis is mainly composed of ______ bone, while the epiphysis is mainly
composed of _______ bone - ✔✔Compact; Spongey
✔✔Bones consist of ________ which secrete _________ - ✔✔Osteocytes;
Hydroxyapatite
✔✔Osteon - ✔✔A group of osteocytes surrounding a central canal containing a nerve
and blood vessel
, ✔✔Growth plates - ✔✔Layers of chondrocytes which are replaced with bone as the
body grows throughout a lifetime
✔✔Osteocytes and Osteoblasts secrete ____, _____, and _____ which makes bones
hard.
Osteoclasts secrete _____ which dissolves bone - ✔✔C2, PO4, and collagen
H+
✔✔Autocrine - ✔✔A cell releases a hormone which it then responds to itself (cell has a
hormone receptor to respond to its own hormone)
✔✔Paracrine - ✔✔A signaling cell releases a hormone which a nearby responding cell
reacts to (a nearby cell has a hormone receptor, no long distance transport of the
hormone)
✔✔Endocrine - ✔✔Secreted hormones enter the blood to be carried to a hormone
receptor somewhere far away
✔✔Steroid Hormones are Hydro_______ - ✔✔-phobic
✔✔Peptide Hormones are hydro______ - ✔✔-philic
✔✔Hormones derived from tyrosine are generally _______ (meaning they can move
directly through the _______) - ✔✔Lipophilic; Cell Membrane
✔✔The thyroid hormone receptor are generally found in the _______ because thyroid
hormones are lipophilic - ✔✔cytoplasm
✔✔Law of Mass Action - ✔✔[Hormone] [Receptor] ⇌ [Hormone Receptor]
✔✔Specificity (in regards to hormone receptors) - ✔✔Hormones have a very specific
shape that binds directly to only their designated hormone receptors
✔✔Affinity (in regards to hormone receptors) - ✔✔a difference in charges is created
between the hormone receptor and the hormone
✔✔Dissociation Constant (Kd) - ✔✔Concentration of hormones at which 1/2 of the
receptors are bound to hormones
✔✔ Dipole Moment - ✔✔The difference in charge between atoms in a water molecule
✔✔Water Molecules Interact With Each Other Through _______ - ✔✔Hydrogen Bonds