Exam (elaborations)
Exam (elaborations) BIOS 255 (BIOS255)
- Course
- BIOS 255
- Institution
- Chamberlain College Of Nursing
BIOS 255 Comprehensive Exam
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BIOS 255 Comprehensive ExamStudy online at https://quizlet.com/_ey3meu
1. What is homeostasis?: maintenance of a stable internal environment with
the contribution of all organ systems
2. What are the components of a homeostatic mechanism?:
-Stimulus -Receptors
-Control center
-Effector
-Response
3. What is a negative feedback mechanism?: Body REVERSES, or goes
against, an original stimulus to return to homeostasis Example: Blood glucose
regulation after eating.
4. What is a positive feedback mechanism?: Amplifies the change from the
normal level. (Agrees with the change) Example: Childbirth, blood clotting
5. What feedback mechanism is most common?: negative
6. Inferior: Below; at a lower level
7. Superior: Above; higher level
8. Lateral: Side; Away from the midline of the body
9. Proximal: Closer to the point of attachment
10. Distal: Father away from the point of attachment
11. Medial: Toward the midline of the body
12. Sagittal: divides body into left and right
13. Transverse: Divides body into upper and lower parts
14. Anterior: toward the front of the body
15. Posterior: toward the back of the body
16. Frontal plane: Divides the body into anterior (front) and posterior (back)
portions.
17. Which part of the atom is involved in chemical reactions?: Electrons
18. Which part of the atom makes up the atomic number?: Protons
19. pH scale: Measurement of hydrogen ion concentration
- pH < 7: Acidic
-pH > 7: Alkaline (basic)
-pH = 7: neutral
20. What is the main function on rough endoplasmic reticulum?: Protein
synthesis
, .
21. What kind of cell division results in a diploid, increasing the number of
cells?: Mitosis
22. How many pairs of chromosomes do humans have?: 23 pairs
23. What kind of cell division results in a haploid?: Meiosis
24. Meiosis I: Splits genetic material in half, producing a diploid
25 Meiosis II:
Separates sister chromatids
-four haploid daughter cells
-develop into egg or sperm
26. Prophase: Chromosomes become visible, nuclear envelope dissolves,
spindle forms
27. Metaphase: Chromosomes line up in the middle of the cell
28. Anaphase: Chromosomes separate and move to opposite ends of the cell
29. Telophase: Chromosomes move to opposite ends of the cell and two nuclei
are formed.
30. What are the 4 types of tissues?: epithelial, connective, muscle, nervous
31. What are the properties of epithelial tissue?: -Cells sit on basement
membrane
-Has apical surface and basal surface
-Avascular
-Polarity
-Innervated
32. What occurs when the apical surface of epithelial cells separate from the
basement layer?: Cell regeneration is triggered.
33. Where can simple squamous epithelium be found?: heart, blood vessels,
kidneys, lungs
34. Where can you find transitional epithelium?: urinary bladder
35. Where can columnar epithelium be found?: passages of the respiratory
system various tubes of the reproductive systems
36. What function does cilia have?: Helps move things along (moves mucous
and foreign particles away)
37. merocrine glands: Secrete their products by exocytosis
-Salivary glands
-Sweat glands
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