Indicate Which Nervous Pathway Is Being Described by Writing the Appropriate

question 14

Short Answer

Indicate which nervous pathway is being described by writing the appropriate letter in the blanks using the following answer code:
a.ascending tracts
b.descending tracts
c.afferent neurons
d.efferent neurons
-Carry information from the PNS to the CNS

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Definitions:

Blastocyst

An early stage of embryonic development that consists of a sphere of cells surrounding a fluid-filled cavity.

Embryo

The early stage of development in multicellular organisms, in humans this phase extends from the second to the eighth week of gestation.

Embryonic Layers

The three primary layers of cells (ectoderm, mesoderm, and endoderm) in an embryo that develop into different organs and tissues.

Ectoderm

The outermost layer of cells or tissue of an embryo in early development, which gives rise to the outer layer of skin, nails, hair, and nervous system.