Answer the following questions:
1- Complete the missing parts:
- The ……… is a series of hollow organs joined in a long, twisting tube from the mouth to ……….
- …………… produce antibodies to further protect the small intestine from infection.
- ………….. include receptors for taste, smell, vision, hearing, and equilibrium.
- …………. is the wall that divides heart into right and left halves.
- …………. they protect body against infections or disease.
- The ………… drains the upper left portion of the body into the left subclavian vein.
- The blood supply of heart comes from the …………. arteries.
- …………… is an important component of bile salts and in formation of vitamin D, plasma membrane and steroid hormones.
2-Identify the following draw with write the labels : 2)