Embryonic Tissue Layers and Organ Development

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How can one improve the resolution of the microscope?

Adjusting the focus

Why is the cell cycle important?

The cell cycle is important for cell growth, DNA replication, and preparation for cell division.

What is the difference between chromatin, chromatid, and chromosome?

Chromatin is the form of DNA when it's not dividing; chromatid is one half of a replicated chromosome; chromosome is the condensed form of DNA.

Name two parts of the microscope that contribute to better focus and avoid hitting the specimen with the objective lenses.

Fine adjustment knob (HPO OIO) and Coarse adjustment knob (Scanner LPO) Signup and view all the answers

What are the three primary regions into which the brain is divided in a 4-mm frog embryo?

prosencephalon, mesencephalon, and rhombencephalon Signup and view all the answers

Which systems or organs are derived from the mesoderm?

Muscles and connective tissues, Circulatory system (blood and vessels), Excretory system (kidneys), Skeleton (bones and cartilage) Signup and view all the answers

What is the yolk plug and what happens to it during organogenesis?

As cells move inward and the blastopore forms, some of the underlying yolk material gets enclosed within the developing embryo. Signup and view all the answers

What is the role of neural crest cells during organogenesis?

Form peripheral nerves Signup and view all the answers

What is the fate of the blastocoel during gastrulation?

It disappears and is replaced by the archenteron. Signup and view all the answers

What do the ectodermal cells at the upper dorsal side become specialized to form?

The neural plate Signup and view all the answers

What does the neural tube become?

The central nervous system Signup and view all the answers

What does the neural tube differentiate into?

Brain (forebrain, midbrain, hindbrain) and spinal cord Signup and view all the answers

What does the prosencephalon differentiate into?

telencephalon (cerebral hemispheres) and diencephalon (thalamus, hypothalamus) Signup and view all the answers

What does the mesencephalon develop into?

midbrain Signup and view all the answers

What does the rhombencephalon divide into?

metencephalon (pons, cerebellum) and myelencephalon (medulla oblongata) Signup and view all the answers

What is the function of the adenohypophysis (anterior pituitary)?

It plays a crucial role in producing and releasing various hormones that regulate several physiological processes. Signup and view all the answers

What is the function of the adhesive gland?

It produces a sticky secretion that helps the embryo adhere to surfaces, especially in an aquatic environment. Signup and view all the answers

What does the infundibulum contribute to the formation of?

pituitary gland Signup and view all the answers