Answer: the correct answer is d. all of the above must happen for defecation to occur.
Explanation:
In response to the distention of the rectal wall, the receptors send sensory nerve impulses to the sacral spinal cord. Motor impulses from the cord travel along parasympathetic nerves back to the descending colon, sigmoid colon, rectum, and anus. The resulting contraction of the longitudinal rectal muscles shortens the rectum, thereby increasing the pressure within it. This then opens the internal sphincter.
Answer:
The important point is that the surface area to the volume ratio gets smaller as the cell gets larger.
Answer:
Robert Hooke
Explanation:
Robert Hooke is an English scientist/biologist who in 1665 was the first to name CELLS after observing cork on a compound microscope he improved on. Robert Hooke published his discovery in his book titled: Micrographia.
Hence, according to this question where Nuris is writing a paper on the scientist who first named cells after studying cork. Her paper is obviously talking about ROBERT HOOKE who was the first to discover cells in cork.
It would be uable to defend itself.
