Five Weeks After Conception,the Developing Organism Is Called A(n)

question 18

Multiple Choice

Five weeks after conception,the developing organism is called a(n) :

• A)blastocyst.
• B)zygote.
• C)fetus.
• D)embryo.

---

Definitions:

Chordae Tendineae

Tendinous strands running from the papillary muscles to the atrioventricular valves.

Endocardium

Innermost layer of the heart, including endothelium and connective tissue.

Semilunar Valve

Valves located at the bases of the aorta and the pulmonary artery that prevent the backflow of blood into the ventricles of the heart during contraction.

Pulmonary Vein

One of the veins that carry blood from the lungs to the left atrium of the heart.