The embryos of all animals undergo gastrulation, a dramatic reorganization of cells critical to formation of the animal body.
do you understand all the terms associated with gastrulation? drag the terms to appropriate blanks to complete the sentences below:
gastrula, blastopore, archenteron.

a) gastrulation is a dramatic reorganization of the hollow blastula into a two-layered or three-layered embryo called a
b) invagination of cells into the blastocoel forms a tube called the
c) the open end of the archenteron is called the

gastrula, archenteron, blastospore

Explanation:

a) Gastrulation is a dramatic reorganization of the hollow blastula into a two-layered or three-layered embryo called a gastrula.

b) Invagination of cells into the blastocoel forms a tube called the archenteron.

c) The open end of the archenteron is called the blastospore..

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.