4.2 The breeding cycle
Presentation
•
English
•
12th Grade
•
Easy
Sarah Evans
Used 2+ times
FREE Resource
39 Slides • 51 Questions
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Multiple Choice
What hormone plays a big role in preparing a female dog's body for mating during the heat cycle?
Testosterone
Progesterone
Oestrogen
Insulin
4
Multiple Choice
What type of discharge is produced when the vulva swells in a female dog during the heat cycle?
Watery
Serosanguineous
Mucous
Purulent
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6
Multiple Choice
What happens to the release of FSH and LH when oestrogen levels rise?
The release increases
The release decreases
The release remains the same
The release stops completely
7
Multiple Choice
What is the role of Follicle-Stimulating Hormone (FSH)?
Triggers ovulation
Develops eggs in the ovaries
Increases oestrogen levels
Stops the menstrual cycle
8
Multiple Choice
Which hormone triggers ovulation?
Oestrogen
Follicle-Stimulating Hormone (FSH)
Luteinizing Hormone (LH)
Progesterone
9
Multiple Choice
What is the purpose of the negative feedback mechanism in hormonal control?
To increase hormone levels indefinitely
To ensure FSH and LH levels remain high
To keep the cycle controlled by preventing high levels of FSH and LH
To stop hormone production completely
10
Multiple Choice
What signals the brain to reduce the release of FSH and LH?
Decrease in oestrogen levels
Increase in oestrogen levels
Increase in progesterone levels
Decrease in progesterone levels
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13
Multiple Choice
What is the corpus luteum?
A permanent structure in the ovary
A temporary structure in the ovary
A type of egg cell
A hormone
14
Multiple Choice
What hormone does the corpus luteum produce?
Estrogen
Testosterone
Progesterone
Insulin
15
Multiple Choice
What is the role of progesterone produced by the corpus luteum?
Increases blood sugar levels
Prepares the uterus for pregnancy
Stimulates hair growth
Enhances muscle strength
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17
Multiple Choice
At what age does a bitch typically reach cyclical activity?
3 to 12 months
6 to 24 months
1 to 3 years
2 to 4 years
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Multiple Choice
How many oestrous cycles do bitches normally have per year?
One
Two
Three
Four
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Multiple Choice
What is the term used to describe bitches having one oestrus in a cycle?
Polyestrus
Dioestrus
Monoestrus
Anoestrus
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Multiple Choice
How long does each oestrous cycle last approximately?
1 week
2 weeks
3 weeks
4 weeks
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Multiple Choice
What characteristic allows a bitch to not need mating to have an oestrous cycle?
Induced ovulator
Spontaneous ovulator
Seasonal breeder
Continuous breeder
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25
Multiple Choice
What happens to the ovaries during the proestrus phase?
They stop producing hormones.
They start producing oestrogen.
They shrink in size.
They release eggs.
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Multiple Choice
What physical change occurs in the vulva during proestrus?
It becomes dry.
It swells and a bloody discharge appears.
It changes color.
It becomes smaller.
27
Multiple Choice
What hormone helps follicles develop in the ovaries?
Testosterone
Progesterone
FSH
LH
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Multiple Choice
During proestrus, what is the female's behavior towards males?
She is ready to mate.
She ignores them.
She attracts males but isn’t ready to mate yet.
She becomes aggressive.
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Multiple Choice
What happens to oestrogen levels during the oestrus phase?
They increase.
They drop.
They remain constant.
They fluctuate randomly.
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Multiple Choice
Which hormone surge triggers ovulation during the oestrus phase?
Progesterone
Estrogen
LH and FSH
Testosterone
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Multiple Choice
What is the duration of the oestrus phase?
1-3 days
5-9 days
10-14 days
15-20 days
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Multiple Choice
What happens to progesterone levels during the oestrus phase?
They decrease.
They remain constant.
They increase.
They disappear.
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Multiple Choice
What is the role of FSH during the oestrus phase?
Triggers ovulation
Supports egg development
Inhibits ovulation
Decreases progesterone
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42
Multiple Choice
What forms in the ovary after ovulation during the metoestrus phase?
Follicle
Corpus luteum
Endometrium
Placenta
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Multiple Choice
What happens to progesterone levels if the dog is pregnant during metoestrus?
Progesterone drops
Progesterone stays high
Progesterone disappears
Progesterone fluctuates
44
Multiple Choice
What is the primary hormone involved in the metoestrus phase?
Estrogen
Testosterone
Progesterone
Oxytocin
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Multiple Choice
What is the role of progesterone during the metoestrus phase?
Initiates ovulation
Prepares the uterus for pregnancy
Causes menstruation
Stimulates milk production
46
Multiple Choice
How long does the metoestrus phase last?
About 30 days
About 45 days
About 60 days
About 90 days
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54
Multiple Choice
What is the condition called when the penis does not return into the prepuce?
Paraphimosis
Phimosis
Dysplasia
Hematoma
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57
Multiple Choice
What is the outer protective layer of a female's egg called?
Zona Pellucida
Corona Radiata
Fallopian Tube
Uterine Wall
58
Multiple Choice
What is the function of the enzyme released by the sperm?
To nourish the egg
To break down the inner protective layer
To speed up the sperm
To change the egg's color
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Multiple Choice
Which layer of the egg is thicker and provides protection right around the egg itself?
Corona Radiata
Zona Pellucida
Uterine Wall
Fallopian Tube
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Multiple Choice
Through which tube do sperm swim to reach the egg?
Uterine Wall
Zona Pellucida
Fallopian Tube
Corona Radiata
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Multiple Choice
What must sperm do first to fertilize the egg?
Change the egg's color
Break through the outer layer
Nourish the egg
Speed up their movement
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Multiple Choice
What does it mean when cats are described as polyoestrus?
They have a single oestrous cycle.
They have multiple oestrous cycles.
They do not have an oestrous cycle.
They have a seasonal oestrous cycle.
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Multiple Choice
What is required for cats to release ova?
They need to be mated.
They need to be isolated.
They need to be fed.
They need to be groomed.
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Multiple Choice
What does the term "photoperiod" refer to?
Exposure to water
Exposure to daylight hours
Exposure to temperature
Exposure to food
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73
Multiple Choice
What hormone surge is caused by mating and leads to ovulation?
Estrogen
LH
Progesterone
Testosterone
74
Multiple Choice
What effect do multiple matings have on LH levels?
Decrease LH levels
No effect on LH levels
Increase LH levels
Decrease progesterone levels
75
Multiple Choice
What hormone is produced to maintain pregnancy?
Estrogen
LH
Progesterone
Oxytocin
76
Multiple Choice
How long does gestation last?
30-40 days
50-60 days
64-68 days
70-80 days
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Multiple Choice
What is the primary role of progesterone during pregnancy?
Initiate ovulation
Maintain pregnancy
Increase LH levels
Decrease estrogen levels
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81
Multiple Choice
What does "altricial" mean in the context of rodent young?
They are independent from birth.
They require parental care for a period of time.
They can survive without a nest.
They are born fully developed.
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Multiple Choice
Which rodent is an exception to being altricial?
Mice
Guinea pigs
Rabbits
Hamsters
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Multiple Choice
How long should a rodent's nest not be disturbed to minimize the risk of cannibalism?
5 days
7 days
10 days
14 days
84
Multiple Choice
What can adult rodents do if they sense their nest has been disturbed?
Move the nest
Ignore the disturbance
Eat the young
Build a new nest
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86
Multiple Choice
What type of ovulators are rabbits?
Spontaneous ovulators
Induced ovulators
Seasonal ovulators
Continuous ovulators
87
Multiple Choice
At what age do small rabbit breeds typically reach sexual maturity?
2-3 months
4-5 months
6-7 months
8-9 months
88
Multiple Choice
What is the gestation period of rabbits?
20-25 days
30-35 days
40-45 days
50-55 days
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Multiple Choice
How are rabbit young described at birth?
Precocial
Altricial
Fully developed
Independent
90
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