List #4 Flashcards Preview

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Flashcards in List #4 Deck (50)
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1

basement membrane

- A thin, extracellular layer that anchors epithelium to underlying connective tissue.

2

apical surface

-The superficial layer on top of the epithelium

3

basal surface

-The surface above the dermis but under the epithelium

4

cilia

- Microscopic hair like extensions of the exposed surfaces of most cells

5

microvilli

- Cells specialized for absorption typically have many tiny, cylindrical processes, called microvilli, extending from their free surfaces.

6

stratified squamous epithelium

-Description: many layers, top cells flattened
-Function: protection
-Location: linings of oral cavity, vagina, and anal cavity

7

simple columnar epithelium

-Description: single layer, elongated cells
-Function: Protection, secretion, absorption
-Location: Lining of the stomach and small intestines

8

stratified columnar epithelium

-Description: Top layer of elongated cells, lower layers of cube-shaped cells
-Function: protection, secretion
-Location: male urethra, linings of larger ducts of excretory glands

9

exocrine glands

-Glands that secrete their products into ducts that open onto surfaces, such as the skin or the lining of the digestive tract.

10

endocrine glands

-Glands that secrete their products into tissue fluid or blood

11

macrophages

-Histiocytes, originate as white blood cells and are almost as numerous as fibroblasts in some connective tissues.

12

fibroblasts

-The most common type of fixed cell in connective tissue.
-Large, star-shaped cells produce fibers by secreting proteins into the extracellular matrix of connective tissues.

13

mast cells

-Large and widely distributed in connective tissues, where they are usually near blood vessels.
-They release heparin, a compound that prevents blood clotting.
-They also release histamine, which promotes some of the reactions associated with inflammation and allergies

14

adipose tissue

-Description: cells in fluid-gel matrix
-Function: protects, insulates, and stores fat
-Location: beneath the skin, around the kidneys, and on the surface of the heart

15

elastic cartilage

-Description: cells in solid-gel matrix
-Function: supports, protects, provides flexible framework

16

neuroglia

- They divide and are crucial to the functioning of neurons
- These cells support and bind the components of nervous tissue, carry on phagocytosis, and help supply growth factors and nutrients to neurons by connecting them to blood vessels.

17

epidermis

- Composed of stratified squamous epithelium, it is the outer layer

18

dermis

- The inner layer, it is thicker than the epidermis and is made up of connective tissue containing collage and elastic fibers, smooth muscle tissue, nervous tissue, and blood

19

subcutaneous layer(hypodermis)

- Beneath the dermis, masses of areolar and adipose tissues bind the skin to underlying organs. These tissues are not part of the skin

20

melanocytes

- Specialized cells in the epidermis that produce the pigment melanin from the amino acid tyrosine in organelles

21

keratinocytes

- proteins produced as epidermal cells die and harden

22

sagittal suture

- They fuse together the parietal bones

23

lambdoidal suture

- The occipital bone joins the parietal bones along the lambdoid suture.

24

coronal suture

- The parietal bones are fused at the midline along the sagittal suture, and they meet the frontal bone along the coronal suture.

25

squamosal suture

- A temporal bone on each side of the skull joins the parietal bone along this suture.

26

jugular foramen

- The opening between the temporal and occipital bones, it accommodates the internal jugular vein

27

crista galli

- Projecting upward into the cranial cavity between eh cribriform plates is a triangular process of the ethmoid bone.
-Membranes that enclose the brain attach to this process

28

superior orbital fissures

- Found in the sphenoid bone
- Contains cranial cavities 3 oculomotr,4 trochlear,5 trygeminal(ophthalmic branch), and 6 abducens

29

optic canals

-Found in the sphenoid bone on the lesser wings
- Contains cranial cavity 2 optic nerves.

30

middle nasal conchae

- Project inward from the lateral portions of the ethmoid bone toward the perpendicular plate.
-These bony plates support mucous membranes that line the nasal cavity