Answer:
(46)
Explanation:
in a humans, each cell normally contains 23 pair of chromosomes, for a total of 46, these pairs, called autosomes, look the same in both males and females.
Answer: The surface of an epithelial cell which lies closest to its blood supply is called as the Basal surface.
Epithelial cell is primarily composed of two surface-
1) Apical surface- It is exposed to the environment and lies towards the lumen or internal organ cavity.
2) Basal/ Basolateral surface- It is not exposed to the environment. It lies interiorly and attached to the basement membrane via integrin.
Epithelial cells do not have own blood supply. For obtaining nutrients, they are dependent on the blood capillaries which are present in the nearby tissues. For accomplishing this, the basal surface of epithelial cell plays an essential role. The nutrients from blood enters basal surface via basement membrane which is a selectively permeable membrane.
Thus, basal surface of epithelial cells lies closest to the blood supply.
Metamorphism is the changing of rocks by heat and pressure. During this process, rocks change either physically and/or chemically. They change so much that they become an entirely new rock. Figure 4.22: The platy layers in this large outcrop of metamorphic rock show the effects of pressure on rocks during metamorphism.
Suggestions (hypnotic) to inc/dec subjective intensity
affected participants' ratings of both subjective intensity and unpleasantness
(affect component of pain). Changes seen in S1, somatosensory receiving area. Suggestions
to inc/dec unpleasantness affected participants' ratings of unpleasantness but
NOT intensity. (less suffering). Changes seen in ACC, anterior cingulate
cortex. 1st condition, suggestions to
affect intensity created changes in activity in S1, the somatosensory receiving
area. 2nd condition saw changes in ACC,
anterior cingulate cortex Nalaxone.
