In Human Embryos, Gyri and Sulci First Start to Form

question 66

Multiple Choice

In human embryos, gyri and sulci first start to form after about:

• A)30 days.
• B)5 months.
• C)7 months.
• D)9 months.

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Definitions:

Systolic Pressure

The pressure in the arteries when the heart beats and fills them with blood, the higher number in a blood pressure reading.

Diastolic Pressure

The lowest pressure within the arteries, occurring between heartbeats when the heart is resting and refilling with blood.

Heart Sounds

Sounds produced by the closing of heart valves and the rushing of blood through the heart, typically heard as a "lub-dub" sound with a stethoscope.

Chamber Walls

Structural boundaries of a space or cavity within an organ, often referring to the heart’s compartments.