During the Beginning of Ventricular Systole When the Muscle Is

question 154

Multiple Choice

During the beginning of ventricular systole when the muscle is contracting but not enough pressure hasbuilt up to open the semilunar valves the heart is said to be in

• A) atrial kick.
• B) isovolumetric contraction.
• C) isovolumetric relaxation.
• D) atrial systole.
• E) passive ventricular filling.

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Definitions:

Stigma

The portion of the carpel where pollen grains land during pollination (and before fertilization).

Style

The neck connecting the stigma to the ovary of a carpel.

Pollen Tube

In gymnosperms and flowering plants, a tube or extension that forms after germination of the pollen grain and through which male gametes (sperm cells) pass into the ovule.

Pollinated

The transfer of pollen from the male anthers of a flower to the female stigma of the same flower or another flower, leading to fertilization and the production of seeds.