201-250 Flashcards
1
Q
- In smooth muscle calcium released by the smooth ER initiates contraction by binding to what protein://
A
calmodulin
2
Q
- Which feature typifies T-tubules://
A
T-tubules permit rapid transmission of the action potential into the cell, and also play an important role in regulating cellular calcium concentration.T-tubules allow heart muscle cells to contract more forcefully by synchronising calcium release throughout the cell.
3
Q
- Which characteristic is unique to smooth muscle://
A
4
Q
- In one type of muscle, numerous gap junctions, desmosomes, and adherens junctions are specifically localized in which structures://
A
intercalaated discs
5
Q
- What is the connective tissue covering of a muscle fascicle://
A
perimysium
6
Q
- What is actin://
A
cellular protein found especially in microfilaments, participates in many important cellular processes, including muscle contraction, cell motility, cell division and cytokinesis, vesicle and organelle movement, cell signaling, and the establishment and maintenance of cell junctions and cell shape.
7
Q
- What is the cytoplasm of a muscle cell://
A
Sarcoplasm
8
Q
- What region is made of thin filaments:
A
I band
9
Q
- What is the plasma membrane of a muscle cell called://
A
sarcolemma
10
Q
- What is the covering of an individual muscle fiber://
A
endomysium
11
Q
- When using a compound microscope, objective lenses can be found to have a magnification of all of the following, EXCEPT://
A
12
Q
- What is “compound microscope”://
A
contains two types of lenses that function to magnify an object
13
Q
- On a microscope, what structure connects the eyepiece to the objective lens://
A
nosepiece
14
Q
- What is the role of the condenser lens://
A
focus the light onto the specimen
15
Q
- Which type of microscope has only one lens://
A
simple microscope
16
Q
- Which of the following is NOT a membranous organelle://
A
17
Q
- Which organelle is considered the powerhouse of the cell://
A
mitochondria
18
Q
- Which of the following is NOT considered an inclusion://
A
19
Q
- Collectively, what is the cytoplasm and nucleus called://
A
protoplasm
20
Q
- Which of the following is NOT a membranous organelle://
A
21
Q
- What are developing gametes called://
A
oocytes
22
Q
- What is the female organ called where gametogenesis occurs://
A
ovary
23
Q
- What are the follicular cells://
A
Granulosa cells or follicular cells are cells that surround the oocyte within the follicle
24
Q
- In the female, what is the correct term for the production of gametes called://
A
oogenesis
25
225. What is the acidophilic glycoprotein coat which surrounds the oocyte://
zona pellucida
26
226. What is the cavity within a secondary follicle://
antrum
27
227. Which stage of the follicle is marked by the surrounding of flattened (squamous) follicular cells becoming cuboidal://
prophase
28
228. Which one of the following are the earliest cells of spermatogenesis://
spermatogonia
29
229. What is the "cap"at the anterior portion of a spermatozoon://
acrosome
30
230. What is the mature sperm cell://
It is a haploid cell produced by meiosis male germ cells. Each sperm is motile and comprise the head,
neck, middle piece and tail. The average length of spermatozoa is 55-65 μm.
31
231. What type of tissue lines most ducts://
simple cuboidal epithelium
32
232. What type of epithelium is associated with goblet cells://
simple columnar epithelial cells,
33
233. Which of the following is lined by a serosa://
34
234. What is a gland called if the secretory portion is flask shaped://
alveolar or acinar
35
235. What forms the brush border://
plasma membrane
36
236. What type of epithelium is more than one layer thick://
compound epithelium
37
237. What type of epithelium appears stratified, but is not://
Pseudostratified columnar epithelium
38
238. What type of epithelium is composed of cells which all touch the basement membrane and is only one cell layer thick://
Pseudostratified epithelium
39
239. What type of tissue forms the alveoli in the lung://
simple squamous epithelium
40
240. What type of epithelium is composed of flat cells://
simple squamous epithelium
41
241. Which of the following is NOT a fiber found in connective tissue://
42
242. Which connective tissue cell type contains properties of smooth muscle cells://
Myofibroblasts
43
-243. Which one of these cells is NOT a cell type routinely found in loose connective tissue://
fibroblasts, histiocytes, plasma cells, and mast cells are routinely seen in loose connective tissue.
44
244. Which of the following can be classified as "connective tissue proper"://
loose connective tissue (also called areolar) and dense (irregular and regular ) connective tissue.
45
245. What does connective tissue develop from://
mesenchyme
46
246. Which connective tissue cell is derived from B lymphocytes://
Plasma cells
47
247. Which of the following can be classified as "connective tissue proper"://
Connective tissue proper consists of loose irregular connective tissue and dense connective tissue
(regular and irregular
48
248. What type of connective tissue is an undifferentiated tissue found in the embryo://
Mesenchyme
49
249. What type of tissue is a ligament composed of://
connective tissue that has a lot of strong collagen fibers
50
250. What is areolar tissue://
Areolar tissue is the most widely distributed connective tissue in the animal body. Located in the
skin, areolar tissue binds the outer layers of the skin to the muscles lying underneath
