Regulation of Reproduction - Neuroendocrinology

Question 1

Pathways for simple neural reflex

Answer 1

Stimulus
Sensory neurons
Transmission (internuerons)
Efferent nurons
Neurotransmitter
Target tissue
Response by target tissue

Question 2

Pathway for neuroendocrine reflex

Answer 2

Stimulus
Sensory neurons
transmission
Efferent neurons
Hypothalamus
Neurohormone
blood
target tissue
response by target tissue

Question 3

Oxytocin produced where

Answer 3

Hypothalamus

Question 4

LH, FSH, ACTH, PRL, GH, TSH

Answer 4

Anterior pituitary

Question 5

Hormone definition

Answer 5

Substance produced by special cells thats carried in the blood stream and affects activity of body function

Question 6

Endocrine gland

Answer 6

Gland that produces hormones

Question 7

Reproductive hormone traits

Answer 7

Small quantities
Influence each other
Provide feedback 
Short half lives
Bind to specific receptors

Question 8

Top 6 Repro Hormones

Answer 8

Driver - GnRH
Stimulator - FSH
Ovulator 0 LH
Receptor - E2
Regulator - Progesterone P4
Terminator -Prostaglandin PGF2a

Question 9

Classification of hormones

Answer 9

Neurpeptides
Proteins
Glycoproteins
Prostaglandins
Steriods

Question 10

How are hormones classified

Answer 10

Based on source/origin

Hypothalomic
pituritay
gonodal
uterine
placental

Question 11

Hypothalamus

Answer 11

Released GnRH
Tonic center and surge center
Acts on anterior pituitary

Question 12

Surge Center

Answer 12

Sensitive to positive feedback

Secretes high amplitude and high frequency GnRH

Question 13

Tonic Center

Answer 13

Small secretion of GnRH

Question 14

Anterior Pituitary

Answer 14

has Portal system

LH, FSH, Prolactin

Question 15

Posterior Pituitary

Answer 15

No Portal system

Oxytocin and vasopression

Question 16

Neurohormones

Answer 16

Oxytocin

Question 17

Releasing hormone

Answer 17

GnRH

Question 18

Gonadotrphin hormones

Answer 18

FSH, LH

Question 19

Pregnancy maintenance hormones

Answer 19

Progesterone

P4

Question 20

Luteolytic hormones

Answer 20

PGF2a

Question 21

Hormones stimulating maternal ovaries

Answer 21

eCH, hCG

Question 22

Oestrogen action

Answer 22

Female receptivity, secondary sex characters, female sexual behavior

Question 23

Progesterone action

Answer 23

Sexual behavior, pregnancy maintenance

Question 24

Testosterone action

Answer 24

Sexual behaviour, spematogenesis

Question 25

Prostaglandin

Answer 25

CL regression, uterine contractions

Question 26

Inhibin action

Answer 26

Inhibits FSH release

Question 27

Strength of hormone action depends on

Answer 27

Half life Duration on secretion Receptor-hormone affinity Receptor density

Question 28

Pheromones

Answer 28

Volatile substances excreted to outside atmosphere Affect repro performance Enhance puberty

Question 29

Female Feedback

Answer 29

CL releases P4 negative to hypothalamus | Follicle releases E2 (positive feedback)

Question 30

Negative feed back

Answer 30

CL releases P4 | Supression of GnRH neurons

Question 31

Positive feedback

Answer 31

Stimulaiton of GnRH neurons

Question 32

High negative feedback(P4) release from CL causes:

Answer 32

Inhibits GnRH neurons = on secrete basal level on GnRH = no FSH and Low LH = little follicular development (pregnant or midcycle)

Question 33

hIGH POSITIVE FEEDBACK (E2) from follicle =

Answer 33

Enhances GnRH = LH and FSH secretion causing ovulation