Questions: During development, a number of embryonic cells called fuse into one large structure that is the muscle fiber. osteoblasts erythrocytes myoblasts chondroblasts
Transcript text: During development, a number of embryonic cells called $\qquad$ fuse into one large structure that is the muscle fiber.
osteoblasts
erythrocytes
myoblasts
chondroblasts
Solution
The answer is the third one: myoblasts.
Explanation for each option:
Osteoblasts: These are cells responsible for bone formation, not muscle fibers.
Erythrocytes: These are red blood cells, which transport oxygen in the blood, not related to muscle fiber formation.
Myoblasts: These are the embryonic cells that fuse to form muscle fibers, making this the correct answer.
Chondroblasts: These are cells that form cartilage, not muscle fibers.
Summary: Myoblasts are the embryonic cells that fuse to form muscle fibers during development.