Histology Lab 1

Question 1

this cell contains steroid secreting cells

Answer 1

false; these mitochondris contain plate-like cristae and are found in cells that need lots of energy (ATP) ; mitochondria that contain tubular reflections (little white circles, as seen in electron microscopy)

Question 2

what is the function of the structure in this figure

a. synthesis of membran-packaged proteins
b. synthesis of steroid hormones
c. detoxification of drugs
d. synthesis of ATP

Answer 2

A. the rough ER is where membrane-packaged proteins are synthesized, including secretory, plasma membrane, and lysosomal proteins. In addition, the rER monitors the assembly, retention, and even degradation of certain proteins.

Question 3

what is the most likely identification of the black circles in this image?

a. lysosomes
b. peroxisomes
c. mitochondria
d. zymogen granules

Answer 3

d. zymogen granules congaining enzyme precursors

Question 4

note the basophilic staining at the tip of the yellow arrow. what is located here?

a. rough ER
b. smooth ER

c. secretory granules
d. golgi apparatus

Answer 4

rough ER

Question 5

In this hepatocyte, what is the function of the structure enlcosed within the blue circle?

Answer 5

transcription of genes into mRNA; the nucleolus is invloved in the synthesis of rRNA and its assembly into ribosome precursors

Question 6

In this hepatocyte, what is the structure between 2 yeallow arrows?

Answer 6

heterchromatin

Question 7

what is the black arrow pointing to?

Answer 7

secretroy granules

Question 8

what letter represents the trans golgi?

Answer 8

C

Question 9

what are the small structures collected within the yellow circles in these hepatocytes?

Answer 9

mitochondira

Question 10

What is the organelle shown within the 4 yellow arrows?

Answer 10

peroxisome

Question 11

what is the region contained between the two yellow arrows?

Answer 11

golgi apparatus

Question 12

Answer 12

microvilli

Question 13

Answer 13

absorption (microvilli seen by EM)

Question 14

Answer 14

microvilli

Question 15

Answer 15

propel substances along the surfaces (cilia)

Question 16

Answer 16

trachea; cilia

Question 17

Answer 17

cilia

Question 18

Answer 18

this is simple squamous epithelium becuase it is the inside lining of a blood vessel it is also the endothelium

Question 19

Answer 19

lining of the peritoneum and pleura; simple squamous epithelium; found in the gut

Question 20

Answer 20

simple cuboidal

Question 21

Answer 21

absorption

Question 22

Answer 22

pseudostratified columnar epithelium with cilia

Question 23

Answer 23

stratified squamous epithelium (nonkeratinized)

Question 24

Answer 24

stratified squamous epithelium (keratinized)

Question 25

Answer 25

relaxed unrinary bladder transitional epithelium

Question 26

what is the function of cholesterol in the membrane?

Answer 26

decrese fluidity