Oral Histology and Embryology

Protein production is initiated at what site

endoplasmic reticulum

Which intercellular component facilitates phagocytosis

lysosome

_______ are primitive brain cells

neuroblasts

What are the three main strucutres part of the lymphatic system

nodes, spleen, thymus

intercellular material serves which function

provides nutrition

most developmental abnormalities arise from

hereditary factors and environmental factors

What is programmed cell death called

apoptosis

Stem cells can be found in which dental tissue

pulp

In which phase of mitosis are the chromatids split into two sets of chromosomes

metaphase

during which period of growth is the developing human most suseptible to teratogens

embryonic 2-8 wks

Mesoderm is the embryonic origin of what tissues

bone, muscle, blood

What are small membrane bound bodies that contain digestive enzymes to help break down substances both inside and outside the cell

lysosomes

protein production begins on the surface of the ____

nucleus

What contains the structures necessary for adsorption

cytoplasm

What stage of development is least suseptible to teratogens

proliferative

Which tissues carries O2 to the body and CO2 to the lungs

blood and lymph

what are the 3 types of muscle tissue

smooth, striated, cardiac

what describes pseduo-stratified epithelium

all cells border the basal lamina but not the surface

Simple epithelium

single layer of cells where all the cells touch the basal lamina and the surface

Which prinicpal cell conducts impulses to regulate muscle activities

neurons

Astroglia

specific type of neuroglia these cells dont conduct impulses

Which component of a neuron receives incoming impulses

dendrite

Axon

conducts nerual impulses away from the neuron

What type of cartilage functions in the epiglottis and larynx

elastic

What is the most common type of cartilage

hyaline cartilage

which organ system produces and secretes hormones

endocrine system

what is calcified connective tissue

bone

which type of muscle facillitates digestion (

involuntary - smooth

What is another name for red blood cell and some characteristcs

erthrocyte - no nucleus or other organelles, Take O2 from the lungs and trasport to the tissues and return CO2 from tissues to the lungs