This printable crossword puzzle on the topic of Human Body Systems has 19 clues. Answers range from 5 to 11 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
cell / the smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a
a mature female reproductive cell, especially of a human or other animal, that can divide to give rise to an embryo usually only after fertilization by a male
conception / the action of conceiving a child or of a child being
a diploid cell resulting from the fusion of two haploid gametes; a fertilized
the organ in the lower body of a woman or female mammal where offspring are conceived and in which they gestate before birth; the
traits that are passed through the
a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of
Traits that always show in a person even if only one gene of the pair is inherited for that
Traits that typically do not show in a person unless both genes for the trait are
(of twins) developed from separate ova and therefore genetically distinct and not necessarily of the same sex or more similar than other
the outermost membrane surrounding an embryo of a reptile, bird, or mammal. In mammals (including humans), it contributes to the formation of the
(of twins) developed from a single fertilized ovum, and therefore of the same sex and usually very similar in
First stage of prenatal development, lasting about two weeks after
the innermost membrane that encloses the embryo of a mammal, bird, or reptile
a flattened circular organ in the uterus of pregnant eutherian mammals, nourishing and maintaining the fetus through the umbilical
a flexible cordlike structure containing blood vessels and attaching a human or other mammalian fetus to the placenta during
an unborn or unhatched offspring in the process of development, in particular a human offspring during the period from approximately the second to the eighth week after fertilization (after which it is usually termed a
soft, elastic, connective tissue found in various
an unborn offspring of a mammal, in particular an unborn human baby more than eight weeks after