Question

All of the following structures are derived from mesoderm EXCEPT

(a) muscles (b) notochord (c) heart (d) pancreas​

Answer 1

Answer:

heart

Explanation:

because is mesoderm

Answer 2

Answer:

(d) Pancreas

Explanation:

• The transformation of the blastula or blastocyst into gastrula refers to gastrulation, which results in the formation of germ layers.

• There are three germ layers: Ectoderm, Endoderm, and Mesoderm.

• Each germ layer gives rise to specific tissues, organs, and organ systems.

While the Mesoderm layer forms i) dermis of the skin,

(ii)Muscles except for iris and ciliary muscles

(iii)connective tissues

(iv)Heart,blood,lymph vessels

(v)Kidneys, Sclera, and choroid of eyes.

(vi)Notochord, most of the skeleton, etc.

The Endoderm layer forms : (i)Lining of gut except for foregut and hindgut

(ii)Pancreas, liver, gastric glands

(iii)Thyroid, parathyroid, thymus, and larger part of the prostate, etc

All of the following structures i.e. muscles, notochord, heart, are derived from mesoderm except the pancreas.

Hence option (d) is correct.