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Histo Final Exam > 201-250 > Flashcards

201-250 Flashcards

1
Q
  1. In smooth muscle calcium released by the smooth ER initiates contraction by binding to what protein://
A

calmodulin

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2
Q
  1. 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.

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3
Q
  1. Which characteristic is unique to smooth muscle://
A
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4
Q
  1. In one type of muscle, numerous gap junctions, desmosomes, and adherens junctions are specifically localized in which structures://
A

intercalaated discs

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5
Q
  1. What is the connective tissue covering of a muscle fascicle://
A

perimysium

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6
Q
  1. 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.

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7
Q
  1. What is the cytoplasm of a muscle cell://
A

Sarcoplasm

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8
Q
  1. What region is made of thin filaments:
A

I band

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9
Q
  1. What is the plasma membrane of a muscle cell called://
A

sarcolemma

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10
Q
  1. What is the covering of an individual muscle fiber://
A

endomysium

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11
Q
  1. When using a compound microscope, objective lenses can be found to have a magnification of all of the following, EXCEPT://
A
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12
Q
  1. What is “compound microscope”://
A

contains two types of lenses that function to magnify an object

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13
Q
  1. On a microscope, what structure connects the eyepiece to the objective lens://
A

nosepiece

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14
Q
  1. What is the role of the condenser lens://
A

focus the light onto the specimen

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15
Q
  1. Which type of microscope has only one lens://
A

simple microscope

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16
Q
  1. Which of the following is NOT a membranous organelle://
A
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17
Q
  1. Which organelle is considered the powerhouse of the cell://
A

mitochondria

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18
Q
  1. Which of the following is NOT considered an inclusion://
A
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19
Q
  1. Collectively, what is the cytoplasm and nucleus called://
A

protoplasm

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20
Q
  1. Which of the following is NOT a membranous organelle://
A
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21
Q
  1. What are developing gametes called://
A

oocytes

22
Q
  1. What is the female organ called where gametogenesis occurs://
A

ovary

23
Q
  1. What are the follicular cells://
A

Granulosa cells or follicular cells are cells that surround the oocyte within the follicle

24
Q
  1. In the female, what is the correct term for the production of gametes called://
A

oogenesis

25
Q
  1. What is the acidophilic glycoprotein coat which surrounds the oocyte://
A

zona pellucida

26
Q
  1. What is the cavity within a secondary follicle://
A

antrum

27
Q
  1. Which stage of the follicle is marked by the surrounding of flattened (squamous) follicular cells becoming cuboidal://
A

prophase

28
Q
  1. Which one of the following are the earliest cells of spermatogenesis://
A

spermatogonia

29
Q
  1. What is the “cap”at the anterior portion of a spermatozoon://
A

acrosome

30
Q
  1. What is the mature sperm cell://
A

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
Q
  1. What type of tissue lines most ducts://
A

simple cuboidal epithelium

32
Q
  1. What type of epithelium is associated with goblet cells://
A

simple columnar epithelial cells,

33
Q
  1. Which of the following is lined by a serosa://
A
34
Q
  1. What is a gland called if the secretory portion is flask shaped://
A

alveolar or acinar

35
Q
  1. What forms the brush border://
A

plasma membrane

36
Q
  1. What type of epithelium is more than one layer thick://
A

compound epithelium

37
Q
  1. What type of epithelium appears stratified, but is not://
A

Pseudostratified columnar epithelium

38
Q
  1. What type of epithelium is composed of cells which all touch the basement membrane and is only one cell layer thick://
A

Pseudostratified epithelium

39
Q
  1. What type of tissue forms the alveoli in the lung://
A

simple squamous epithelium

40
Q
  1. What type of epithelium is composed of flat cells://
A

simple squamous epithelium

41
Q
  1. Which of the following is NOT a fiber found in connective tissue://
A
42
Q
  1. Which connective tissue cell type contains properties of smooth muscle cells://
A

Myofibroblasts

43
Q

-243. Which one of these cells is NOT a cell type routinely found in loose connective tissue://

A

fibroblasts, histiocytes, plasma cells, and mast cells are routinely seen in loose connective tissue.

44
Q
  1. Which of the following can be classified as “connective tissue proper”://
A

loose connective tissue (also called areolar) and dense (irregular and regular ) connective tissue.

45
Q
  1. What does connective tissue develop from://
A

mesenchyme

46
Q
  1. Which connective tissue cell is derived from B lymphocytes://
A

Plasma cells

47
Q
  1. Which of the following can be classified as “connective tissue proper”://
A

Connective tissue proper consists of loose irregular connective tissue and dense connective tissue
(regular and irregular

48
Q
  1. What type of connective tissue is an undifferentiated tissue found in the embryo://
A

Mesenchyme

49
Q
  1. What type of tissue is a ligament composed of://
A

connective tissue that has a lot of strong collagen fibers

50
Q
  1. What is areolar tissue://
A

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

Histo Final Exam (8 decks)

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