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The Cell: Anatomy and Division
Anatomy & Physiology Lab Chapter 4 - The Cell: Anatomy and Division
19
Anatomy
Undergraduate 1
09/20/2016

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Term
Plasma membrane
Definition
external boundary of cell; regulates flow of materials into and out of the cell; site of cell signaling
Term
Lysosom
Definition
contains digestive enzymes of many varieties; "suicide sac" of the cell
Term
Mitochondria
Definition
scattered throughout the cell; major site of ATP synthesis
Term
Microvilli
Definition
slender extensions of the plasma membrane that increase its surface area
Term
Inclusions
Definition
stored glycogen granules, crystals, pigments; present in some cell types
Term
Golgi apparatus
Definition
membranous system consisting of flattened sacs and vesicles; packages proteins for export
Term
Nucleus
Definition
control center of the cell; necessary for cell division and cell life
Term
Centrioles
Definition
two rod-shaped bodies near the nucleus; associated with the formation of mitotic spindle
Term
Nucleolus
Definition
dense nuclear body; packaging site for ribosomes
Term
Microfilaments
Definition
contractile elements of thw cytoskeleton
Term
Rough ER (endoplasmic reticulum)
Definition
membranous tubules covered with ribosomes; involved in intracellular tansport of proteins
Term
Ribosomes
Definition
attached to membrane systems or scattered in the stoplasm; site of protein synthesis
Term
Chromatin
Definition
threadlike structures in the nucleus; contain genetic material (DNA)
Term
Peroxisome
Definition
site of free radical detoxification
Term
Prophase
Definition
chromatin coils and condenses, forming chromosomes. The nuclear envelope fragments. The mitotic spindle forms. Chromesomes first appear to be duplex structures. Cleavage furrow forms.
Term
Anaphase
Definition
the chromosomes are V shaped. The nuclear envelope is completely absent
Term
Telophase
Definition
the nuclear envelope reforms. Chromosomes stop moving toward the poles.
Term
Metaphase
Definition
chromosomes line up in the center of the cell. The nuclear envelope is completely absent.
Term
Interphase
Definition
DNA replication occurs. Centrioles replicate.
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