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Flashcards in digestive system Deck (124)
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1

major components of food

carbs,proteins, fats and water

2

what are the macronutrients

carbs,lipids, proteins
the proximate principles of food

3

micronutrients

protective principles of food,help to keep us away fom diseases
vitamins and minerals

4

macroelements

21 minerals(na,k,ca,s,p,mg,cl) essentional from humans

5

microelements

(Fe,I,Zn,mn,co,cu,mo) with 20 vitamins are required in very small amounts

6

what does the digestive system consist of

alimentary canal and the associated glands

7

where does the alimentary canal start and end

mouth(anterior) and anus(posterior) respectively

8

no. of teeth in the buccal cavity

32 permanent teeth

9

describe the human teeth

diphyodont, thecodont, heterodont,bunodont

10

arrangement of permanent teeth in each half of a jaw

2123(I C PM M)

11

arrangement of teeth in kids

2120

12

the monophyodont teeth in a human

premolars and last molar

13

in a 2-year-old, what teeth would be missing

premolars

14

the hardest substance of the human body and its role

enamel, helps in protecting the dentine and mastication of food

15

where are enamel secreted from

ameloblast cells of ectodermal origin

16

parts of a tooth

crown, neck, root
crown remains capped with hard enamel made of calcium phosphate and format chewing substance of the tooth
the crown and root both have the dentine, underlying the enamel. secreted by mesodermal odontoblast cells
inside the dentine a pulp cavity is present which has nerves and blood supply

17

what attaches the tooth to the socket

the periodontal ligament attaches the tooth to the bony socket

18

type of tooth the elephant's tusk is

modified incisors

19

type of tooth the walrus tusk is

canine

20

type of teeth in birds, spiny anteaters, scaly anteater, some whales is

lol they have no teeth

21

teeth of sloth and armadillos

no enamel

22

classification of teeth on position

1. acrodont: attached to the free surface or summit of the jaw bone
in fish, amphibians and reptiles
2. pleurodont: lateral surface of jaw ridge eg: fangs of snakes
3.thecodont: embedded in sockets and have well-developed roots(mammals and crocodiles)

23

classification of teeth on the arrangement of enamel and dentine

1. bunodont: small blunt round cusp, humans
2. lophodont: intricate folding of enamel and dentine and transverse ridges called lophos connect cusps, elephant
3.selenodont: crescent-shaped enamel with soft dentine in sheep and cattle
4.secodont: pointed cusps like in carnivores

24

the tongue description

voluntary muscle and glandular structure occupying the floor of the mouth

25

what is the tongue attached the mouth's floor by

frenulum fold

26

parts of the tongue

inverted V-shaped furrow called sulcus terminalis which divides the upper surface of the tongue into the anterior oral part and posterior pharyngeal part

27

the different PAPILLAE of tongue

1. filiform: smallest most abundant and no taste buds
2.fungiform: appear as red dots on the tongue and no taste buds
3.foliate :absent in man
4.circumvallate: largest in size and knob-like and have taste buds

28

the different taste buds

tip:sweet
tips and sides:salt
sides:sour
base:bitter

no taste buds for spice,just pain receptors

29

tongue of dogs

sweat glands

30

pharynx

oral cavity leads to pharynx,commaon passage for food and air