Prepuce & Mammary Gland (Exam 3)

Question 1

Fold of skin covering distal end of the penis (non-erect)

Answer 1

prepuce

Question 2

Prepuce is also known as:

Answer 2

“free part of the penis”

Question 3

What are the 2 layers of the prepuce?

Answer 3

external lamina
internal lamina

Question 4

The prepuce is (glandular/non-glandular).

Answer 4

non-glandular

Question 5

(T/F) Both parts of the prepuce are indistinct from normal hairy skin.

Answer 5

False - internal lamina is non-hairy!

Question 6

Which part of the prepuce is continuous with the skin that covers the free part of the penis?

Answer 6

internal lamina

Question 7

External opening of the prepuce where the external lamina reflects and becomes internal

Answer 7

preputial orifice

Question 8

Space between the internal lamina and the skin covering the free part of the penis

Answer 8

preputial cavity

Question 9

What muscles are derived from part of the cutaneous trunci M? Are they sensory/motor/mixed?

Answer 9

preputial Mm
motor (skeletal)

Question 10

Which species does not have preputial muscles?

Answer 10

horse (stallion)

Question 11

What 2 types of preputial muscles are there?

Answer 11

cranial preputial muscles
caudal preputial muscles

Question 12

Function of cranial preputial muscles

Answer 12

pull prepuce cranially after erection

Question 13

Function of caudal preputial muscles

Answer 13

pull prepuce caudally during erection

Question 14

What 2 additional parts of the prepuce does the stallion have?

Answer 14

1. preputial fold
2. preputial ring

Question 15

What is the extra fold of internal lamina of the prepuce in the stallion? What is its purpose?

Answer 15

preputial fold
for very long erection

Question 16

What is the firm structure on the cranial edge of the preputial fold formed from the thickened dermis when the penis is relaxed (in the stallion)?

Answer 16

preputial ring

Question 17

What is different about the prepuce in the boar?

Answer 17

has a preputial diverticulum

Question 18

The preputial diverticulum of the boar is within the (internal/external) lamina and has (one/two) opening(s).

Answer 18

internal
one (but bilobed!)

Question 19

Because of the presence of the preputial diverticulum in the pig, you must make sure your cut is on the (dorsal/ventral/medial/lateral) part of the abdominal wall cranial to the prepuce.

Answer 19

ventral (in front of the hooks)

Question 20

The mamma is made of what two things?

Answer 20

teat + glandular complex

Question 21

The cow has __ mamma total, __ on each side.

Answer 21

4
2

Question 22

What is the term for the mammary gland complex in the cow?

Answer 22

udder

Question 23

Each mamma has a body and a papilla or ______.

Answer 23

teat

Question 24

(T/F) The greater the size of the udder, the more milk that is produced.

Answer 24

False

Question 25

Cranially, the vessels on the udder are _____. Caudally, the vessels are ______.

Answer 25

veins lymph vessels

Question 26

Term for the glands you can see macroscopically in the glandular complex of the mamma

Answer 26

lactiferous ducts

Question 27

Lactiferous ducts are made of many fused _______.

Answer 27

interlobular ducts

Question 28

Two parts of the lactiferous sinus of the mamma

Answer 28

1. glandular part 2. papillary part

Question 29

Two other names for glandular part of lactiferous sinus

Answer 29

1. gland sinus 2. gland cistern

Question 30

Two other names for papillary part of lactiferous sinus

Answer 30

1. teat sinus 2. teat cistern

Question 31

Which part of the lactiferous sinus is proximally located? Which is distal?

Answer 31

proximal: glandular part distal: papillary part

Question 32

Name for duct which milk flows out of from the lactiferous sinus

Answer 32

papillary duct

Question 33

Two other names for papillary duct

Answer 33

1. teat canal 2. streak canal

Question 34

What lines the papillary duct?

Answer 34

thick, soft keratinized stratified squamous epithelium

Question 35

Term for external opening of the papillary duct to the outside

Answer 35

papillary ostium

Question 36

The papillary sphincter muscle is (longitudinally/circularly) oriented and surrounds the _________.

Answer 36

circularly papillary ostium

Question 37

What is the function of the papillary sphincter muscle?

Answer 37

keep duct closed when not milking (prevent bacteria entering)

Question 38

Term for infection/inflammation of gland of the udder

Answer 38

mastitis

Question 39

The mare has 2 ______ and 2 _____.

Answer 39

papillary ducts teats

Question 40

In the mare, each teat has __ gland complex(es).

Answer 40

two

Question 41

(T/F) The gland complexes between teats communicate in an intricate network.

Answer 41

False - NO communication

Question 42

The suspensory apparatus of the udder is mainly attached where?

Answer 42

layers of the abdominal wall (NOT hips)

Question 43

What are the 2 parts of the suspensory appartus of the udder?

Answer 43

1. lateral laminae 2. medial laminae

Question 44

The medial laminae of the suspensory apparatus of the udder is also called what?

Answer 44

suspensory ligament

Question 45

What kind of connective tissue makes up the lateral laminae of the suspensory apparatus of the udder? The medial laminae?

Answer 45

lateral: thick DICCT medial: thin elastic connective tissue

Question 46

_______ gets thick ventrally and forms each medial lamina (split into left and right halves).

Answer 46

tunica flava

Question 47

What is the short sheet of tissue that originates from the aponeurosis of the abdominal oblique Mm and immediately divides into lateral lamina and medial femoral fascia?

Answer 47

femoral lamina

Question 48

The teat turns (laterally/medially). Why?

Answer 48

laterally elastic medial lamina and in-elastic lateral lamina

Question 49

What is the main artery that supplies the udder?

Answer 49

external pudendal A

Question 50

The external pudendal A branches into ______ directed cranially, and ______ directed caudally.

Answer 50

cranial mammary A caudal mammary A

Question 51

What are other names for the cranial & caudal mammary Aa?

Answer 51

cranial = caudal superficial epigastric caudal = ventral labial branch

Question 52

What is the main vein that drains blood from the udder?

Answer 52

external pudendal vein

Question 53

What additional vein drains blood from the udder?

Answer 53

milk vein (subcutaneous abdominal V)

Question 54

When does the milk vein form?

Answer 54

late in first pregnancy

Question 55

The milk vein is formed by the anastomosis of what two vessels?

Answer 55

cranial + caudal superficial epigastric Vv

Question 56

Which vein is known as the "milk well" where milk vein perforates part of the abdominal wall?

Answer 56

cranial superficial epigastric V

Question 57

What lymph nodes are the first drainage site of the udder and at its base?

Answer 57

mammary lnn (superficial inguinal lnn)

Question 58

Lymph from the udder first drains from the mammary lymph nodes and then to ________.

Answer 58

deep ilioguinal lnn (femoral)

Question 59

Which lymph nodes can receive afferent lymph vessels from the udder and become enlarged if infected?

Answer 59

subiliac lnn

Question 60

Which lymph nodes are located by the caudal gluteal vessels and deep (therefore, not palpable).

Answer 60

tuberal lnn