Gap junctions are especially abundant in what kind of tissue?
a. nerves
b. tendons
c. cardiac muscle and smooth muscle
d. brain tissue
e. fingernails
c
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Communication between cells is key to organism-level regulation of the internal environment to maintain health, that is, nearly constant internal conditions (homeostasis). Outline and compare the intercellular communication pathways that function to provide homeostasis
At the time of implantation, the human embryo is in a stage of development known as the
A. fetus. B. zygote. C. morula. D. blastocyst. E. egg.
With the elbow and wrist extended, painting a circle on a canvas requires __________ of the shoulder.
A. rotation B. circumduction C. extension D. flexion E. elevation
Where are receptors for the chemical senses located?
A. in the organ of Corti and saccule B. in the cochlea and lateral geniculate nucleus C. in the skin and tendons D. in the tongue and nose E. in the fovea and semicircular canals