Integument, Support, and Movement

0.0(0)
Studied by 0 people
call kaiCall Kai
Locked
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/37

encourage image

There's no tags or description

Looks like no tags are added yet.

Last updated 3:11 PM on 9/11/26
Name
Mastery
Learn
Test
Matching
Spaced
Call with Kai
Chat

No analytics yet

Send a link to your students to track their progress

38 Terms

1
New cards

Hair

  • derived from stratus corneum, begins development in stratum basale


2
New cards

Hair Structural Layers

  • medulla

  • cortex

  • cuticle


3
New cards

Medulla

core of the hair

4
New cards

Cortex

surrounds medulla, contains natural pigment/moisture

5
New cards

Cuticle

outer layer, protective scale/transparent

6
New cards

Hair Growth Patterns

  • angora

  • definitive


7
New cards

Angora

  • long & flowing

  • continuous growth

  • may/may not be shed


8
New cards

Definitive

  • determinate growth

  • shed & replaced


9
New cards

Functional Hair Types

  • vibrissae

  • pelage


10
New cards

Vibrissae

  • long, stiff hairs that function as tactile receptors

  • definitive growth


<ul><li><p>long, stiff hairs that function as tactile receptors</p></li><li><p>definitive growth</p></li></ul><p></p>
11
New cards

Pelage

guard hairs & underfur

  • spines

  • bristles

  • awns


12
New cards

Spines

  • definitive growth

  • stuff, enlarged guard hairs


<ul><li><p>definitive growth</p></li><li><p>stuff, enlarged guard hairs</p></li></ul><p></p>
13
New cards

Bristles

  • angora growth

  • communication


<ul><li><p>angora growth</p></li><li><p>communication</p></li></ul><p></p>
14
New cards

Awns

  • definitive

    • wool

    • velli


15
New cards

Wool

  • long

  • soft

  • warm

  • curly


<ul><li><p>long</p></li><li><p>soft</p></li><li><p>warm</p></li><li><p>curly</p></li></ul><p></p>
16
New cards

Velli

down or fuzz (neonates)

<p>down or fuzz (neonates)</p>
17
New cards

Hair Color

distribution & density of melanin (2 types)

18
New cards

Pheomelanin

red/yellow

19
New cards

Eumelanin

black/brown

20
New cards

Absent of Melanin

gray/white

21
New cards

Agouti

banded pattern

22
New cards

Albinism

absence of pigment

23
New cards

Melanism

high levels of melanin

24
New cards

What factors select for hair color?

environmental pressures

  • UV protection

  • polar animals (lighter hair)

  • countershading

  • crypsis (camouflage)

  • disruptive coloration


25
New cards

Post juvenile Molting

  • baby fur » adult

  • starts after weaning


26
New cards

Annual Molting

  • one big molt

  • helps replace damaged hair due to activity


27
New cards

Seasonal Molting

replaces more than once per year

28
New cards

Integumentary Glands

  • sebaceous

  • eccrine

  • apocrine


29
New cards

Sebaceous Glands

associated w/ hair follicle

  • secrete sebum (keeps shaft moist/waterproof)

  • glands attached to muscle which squeeze out sebum when muscle contracts


<p>associated w/ hair follicle</p><ul><li><p>secrete sebum (keeps shaft moist/waterproof)</p></li><li><p>glands attached to muscle which squeeze out sebum when muscle contracts </p></li></ul><p></p>
30
New cards

Eccrine Glands

  • produce sweat

  • common on soles & palms


<ul><li><p>produce sweat</p></li><li><p>common on soles &amp; palms</p></li></ul><p></p>
31
New cards

Apocrine Glands

  • produce viscous fluid

  • begin functioning at puberty

  • located near hair follicles

  • armpits & anogenital region


<ul><li><p>produce viscous fluid</p></li><li><p>begin functioning at puberty</p></li><li><p>located near hair follicles</p></li><li><p>armpits &amp; anogenital region</p></li></ul><p></p>
32
New cards

Scent Glands

  • modified sebaceous/apocrine

  • act as pheromones


33
New cards

Mammary Glands

  • develop along “milk lines”

  • adipose tissue forms the breast

  • functional only in females (except for bats)


34
New cards

Claws, Nails, and Hooves

  • devlop from stratum corneum

  • indeterminate growth

  • 2 parts

    • unguis

    • subunguis

  • climbing, digging, fighting

*label which is which, and where unguis is, etc.


<ul><li><p>devlop from stratum corneum</p></li><li><p>indeterminate growth</p></li><li><p>2 parts</p><ul><li><p>unguis</p></li><li><p>subunguis</p></li></ul></li><li><p>climbing, digging, fighting</p></li></ul><p>*label which is which, and where unguis is, etc.</p><p></p>
35
New cards

Unguis

dorsal

heavily keratinized

36
New cards

Subunguis

  • ventral

  • softer

  • continuous w/ pad


37
New cards

True Horns

  • core bony

  • outer keratinized

  • NOT shed

  • unbranched

  • common in Bovidae

  • occur in both sexes

  • grow continuously

  • aged by growth rings


<ul><li><p>core bony</p></li><li><p>outer keratinized</p></li><li><p>NOT shed</p></li><li><p>unbranched</p></li><li><p>common in Bovidae</p></li><li><p>occur in both sexes</p></li><li><p>grow continuously </p></li><li><p>aged by growth rings</p></li></ul><p></p>
38
New cards

Antlers

  • entirely bone

  • branched

  • grows covered in velvet

  • common in Cervidae

  • occurs in males only


<ul><li><p>entirely bone</p></li><li><p>branched</p></li><li><p>grows covered in velvet</p></li><li><p>common in Cervidae</p></li><li><p>occurs in males only </p></li></ul><p></p>