Hans Spemann Called the Dorsal Lip of the Blastopore the Embryonic

question 65

Multiple Choice

Hans Spemann called the dorsal lip of the blastopore the embryonic organizer because it

• A) is the point where gastrulation begins.
• B) becomes part of the nervous system.
• C) becomes part of the notochord.
• D) leads to the establishment of the embryonic axes.
• E) is the location at which the sperm enters the egg.

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Definitions:

Inspiratory Reserve Volume

The extra volume of air that can be breathed in beyond a regular breath, adding to the overall lung capacity.

Expiratory Reserve Volume

The additional amount of air that can be forcibly exhaled after a normal exhalation.

Residual Volume

The amount of air remaining in the lungs after a forceful exhalation, important for preventing lung collapse and for maintaining consistent gas exchange.

Vital Capacity

The maximum amount of air a person can expel from the lungs after a maximum inhalation, used as a measure of lung function.