Lab Exam 3

Question 1

lines internal cavities, the heart, and all the blood vessels. It also lines parts of the urinary, respiratory, and male reproductive tracts.

Answer 1

simple squamous epithelium

lining of lungs, air sacs, blood vessels, and protects

Question 2

what is the epidermis made of?

Answer 2

stratified squamous epithelium

Question 3

found in tubules of the kidney and in the ducts of many glands, where it has a protective function. Also occurs in the secretory portions of some glands including the ovaries.

Answer 3

simple cuboidal epithelium

lining of kidney tubules, carious glands, absorbs molecules

Question 4

lines the digestive tract from the stomach to the anus, protects, secretes, and allows absorption of nutrients.
nucleus near the base
lining of uterus

Answer 4

simple columnar epithelium

Question 5

found in the trachea

sweeps impurities toward the throat

Answer 5

pseudostratified ciliated columnar epithelium

Question 6

what is the skin, lining of mouth, throat, anal canal, and vagina out of?

Answer 6

stratified squamous

Question 7

contains many collagenous fibers packed closely together, as in tendons, which connect muscles to bones, and in ligaments, which connect bones to other bones at joints.

Answer 7

dense fibrous connective tissue

Question 8

has space between components, supports epithelium, and also many internal organs, such as muscles, blood vessels, and nerves. Its loose construction allows organs to freely move.

Answer 8

loose fibrous connective tissue

occurs beneath skin and most epithelial layers

Question 9

• has cells in lacunae (chondrocyte within lacunae)
• occurs in nose and walls of respiratory passages; at ends of bones, including ribs
• functions in support and protection

Answer 9

hyaline cartilage

Question 10

what kind of cells are found in hyaline cartilage?

Answer 10

chondrocytes

Question 11

Which type of muscle tissue has multiple nuclei?

Which one is branched?

Answer 11

Skeletal

Cardiac

Question 12

the biceps have ______ origins and the triceps have ______

Answer 12

2, 3

Question 13

in long bone, what part contains red bone marrow? and which part contains yellow marrow (for fat storage) ?

Answer 13

epiphysis, diaphysis

Question 14

layer of cartilage that articulates with another bone; decreases friction

Answer 14

hyaline cartilage

Question 15

what is the outer most covering of bone, continuous with the ligaments and tendons that anchor bones, allows blood vessels to enter the bone and service its cells

Answer 15

periosteum

Question 16

how many true ribs are there?
false ribs?
floating ribs?

Answer 16

7
3
1 all paired

Question 17

muscles work in ___________ pairs

Answer 17

antagonistic pairs

Question 18

the bone that is not articulated with any other bone, helps with swallowing

Answer 18

hyoid bone

Question 19

what are the first two vertebral bones?

Answer 19

atlas and then axis

Question 20

what bones make up the pelvic girdle?

Answer 20

two paired coxal bones. each consists of the ilium (superior), the pubis and ischium

Question 21

in mammals, the yolk is evenly dispersed but in birds and frogs, the yolk is divided into what two poles?

Answer 21

animal pole (where division occurs) and the vegateal pole. This is called holoblastic cleavage

Question 22

characterized by complete cleavage that divides the whole egg into distinct and separate blastomeres

Answer 22

holoblastic

Question 23

characterized by incomplete cleavage as a result of the presence of a mass of yolk material

Answer 23

meroblastic

Question 24

in the biuret test what does purple and pink mean?

Answer 24

PURPLE-proteins are present no digestion occurred
PINK- polypeptides are present, digestion occurred (when pepsin and HCL are together bright pink, pepsin alone slightly pink)
Blue- no proteins or polypeptides are present

Question 25

pepsin does not work efficiently without ________

Answer 25

HCL

Question 26

if fat is digested, the fatty acids will cause the pH to go down and cause the liquid to turn ________

Answer 26

yellow. red is neutral and bright pink is basic

turns yellow only in the presence of lipid, lipase, and bile salts.
lipids and lipase only causes the liquid to be slightly pink

Question 27

when testing for starch, the water will turn ________ if the starch is digested and _________ if the starch is still present with idodine

Answer 27

orange/brown (in the presence of amylase)

blue/black (when starch is present, if amylase is boiled, and with pepsin)

Question 28

the test used for testing the presence of sugars (maltose) what are the color changes with increasing sugar content?

Answer 28

Benedict’s test.

blue — green—orange— red