30 Questions
During the germinal period, the zygote undergoes rapid cleavage cell divisions.
True
The morula is a solid ball of 16-32 cells formed within 72 hours of fertilization.
True
The blastocyst is formed by the embryoblast, blastocoel, and trophoblast.
True
Implantation occurs 5 to 7 days following fertilization.
True
The bilaminar embryonic disk forms from the embryoblast and hypoblast.
True
The amnion is derived from trophoblast cells.
False
The chorion surrounds all other extraembryonic membranes.
True
The allantois develops into the umbilical cord and the urinary bladder.
True
The fetal period lasts from weeks 3 to 8.
False
The ectoderm develops into the nervous system and the epidermis of the skin.
True
The mesoderm develops into muscle, bone, dermis, and blood vessels.
True
The endoderm develops into the epithelial lining of the urinary, digestive, respiratory, and reproductive systems.
True
During the fetal period, major organ systems become almost fully developed.
True
Genotype refers to the observable expression of a person's genetic makeup.
False
Tight junctions allow substances to freely pass between cells.
False
Desmosomes are protein links between cells that add strength to sheets of cells.
True
Gap junctions are important for the function of cardiac and smooth muscle.
True
Epithelial tissue covers the body surface and lines the body cavities.
True
Epithelial tissue contains blood vessels.
False
Simple epithelium is important for gas, nutrient, and ion exchange.
True
Stratified epithelium provides physical, chemical, and biological protection.
True
Proteoglycans are the protein fibres found in the extracellular matrix of connective tissues.
False
Elastin provides stretch and recoil to collagen fibres in connective tissues.
True
Ground substance is the unstructured material between cells in connective tissues.
True
Adipose tissue is an example of loose connective tissue.
False
Dense regular connective tissue has fibres arranged irregularly.
False
Superficial fascia is a layer of dense fibrous connective tissue that surrounds organs, muscles, bones, nerves, and blood vessels.
False
Cartilage is a vascular tissue that heals slowly.
False
Bone matrix is formed of hydroxyapatite and proteoglycans.
True
Blood is composed of red and white blood cells, platelets, and plasma.
True
Test your knowledge on cell junctions and their functions in this quiz. Learn about tight junctions and desmosomes, and how they contribute to cell structure and function. Explore the role of proteins in maintaining cell connections.
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