Term
| The pars of the pituitary gland that has the greatest endocrine function is the |
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Definition
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Term
| Exposing a female fetus to androgens would result in |
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Definition
| development of both mullerian and wolffian ducts |
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Term
| During spermiogenesis, the axoneme develops from the |
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Definition
|
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Term
| The anterior lobe of the pituitary is comprised of |
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Definition
| pars distalis and pars tuberalis |
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Term
|
Definition
- Metaphase II oocytes are ovulated
- the primary oocyte is fixed in a resting stage known as dictyte (sp?)
- activation is required for completion of meiosis
- terminal oogenetic stage is the ootid
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|
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Term
| the neurohypophysis is comprised of the..... |
|
Definition
median eminence
infundibular stalk
pars nervosa |
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Term
| What follicle stages can a primary ooctye be found |
|
Definition
| primary-graafian follicles |
|
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Term
| during spermiogenesis, the acrosome develops from the..... |
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Definition
|
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Term
| The hormone directly responsible for maintenance of spermiogenesis is.... |
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Definition
|
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Term
| In the ewe, the secretory activity of RFRP- producing neuroendocrine cells would be higher or lower in the fall? |
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Definition
|
|
Term
| Castration will cause FSH levels to decrease or increase in the blood? |
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Definition
|
|
Term
| Tactile erotogenic stimuli delivered to the glans penis would do what? |
|
Definition
| Stimulate the pudendal nerve to transmit sensory afferent impulses to the spinal cord |
|
|
Term
| Can secondary ooctyes be found in menopausal women? |
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Definition
|
|
Term
| Does the activity of inhibitory neurons leading from the superior cervical ganglion increase or decrease as more light is perceived by the retinal nerves? |
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Definition
|
|
Term
| Why are some hormone actions called "fast" |
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Definition
| Because gene expression and protein synthetic events are not induced |
|
|
Term
| Why is hCG regarded as the pregnency recognition signal from the embryo? |
|
Definition
| Because it is luteotrophic and appears several days before luteolysis would occur in a non-pregnant female |
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Term
|
Definition
Physiologic, organic chemical substance
produced by certain specialized cells
which diffuses or passes directly
into the circulation
for the purpose of either
stimulating or inhibiting
the functional activity of a target cell, organ or tissue |
|
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Term
| Hypothalamic neurohormones involved in regulating release of pituitary gland hormones are delivered into a specialized vascular bed called what? |
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Definition
| Hypothalamic hypophyseal portal system |
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Term
| In the male fetus, the efferent ducts develop from what? |
|
Definition
|
|
Term
| In the female fetus, the oviduct develops from what? |
|
Definition
|
|
Term
| The portion of fused plasma and acrosomal membranes that seperates the acrosome from the post-acrosomal region of the sperm head is called.... |
|
Definition
|
|
Term
| the pocket of the ectoderm that fuses with neural ectoderm to form yje pituitary galnd |
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Definition
|
|
Term
| What type of cells produce equine chorionic gonadotropin |
|
Definition
|
|
Term
| What do trophoblast cells do? |
|
Definition
| Leave the chorionic girdle of the mare conceptus and colonize the endometrium to produce specialized endocrine organs called endometrial cups |
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|
Term
| What is the hypothalamic neuropeptide formerly known as metastatin |
|
Definition
|
|
Term
| What does kisspeptin cause the release of? |
|
Definition
| Gonadotrophin releasing hormone |
|
|
Term
| Primordial germ cells divide mitotically to generate a population of these cells, of which most disappear by birth of the female: |
|
Definition
|
|
Term
|
Definition
| Thyrotropin releasing hormone |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| Relative levels of melatonin in the ewe during a short day amd a long day |
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|
Term
|
Definition
| Relative levels of LH in the ewe during a short day and a long day |
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|
Term
|
Definition
|
|
Term
| Mechanism of hormone action for GnRH induces secretion of LH |
|
Definition
- GnRH binds membrane receptor on gonadotropes
- Activetes G protein
- Activates phospholipase C
- IP3-->DAG
- Activates PKC
- Phosphorylation rxns
- Activates transcription factors for LH gene
- Transcription of LH gene by RNA polymerase II
- Translation of LH mRNA
- Secretion of LH protein
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|
|
Term
|
Definition
- Suckling
- Sensory afferent neurons
- Spinal cord
- hypothalamus
- decrease PRIH (dopamine)
- HHPS
- pars distalis
- lactotropes
- increase Prl
- lateral hypophyseal vein
- cavernous sinus
- jugular vein
- systemic circulation
- mammary gland
- glandular epithemium in alveoli
- maintain lactation
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|
|
Term
|
Definition
- Suckling
- sensory afferent neurons
- spinal cord
- PVN, SON
- pars nervosa
- OT released into posterior lobe vein
- jugular vein
- systemic circulation
- mammary gland
- myoepithelial cells in alveoli
- compression of alveoli
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|
|
Term
| What does the RF in RF-related peptides mean? |
|
Definition
R= Arginine
F= Phenylalanine
|
|
|
Term
| During development of the fetal gonads, cortical tissue develops into..... |
|
Definition
| Germinal epithelium and tunica albuginea |
|
|
Term
| During spermiogenesis, the manchette first appears in what stage? |
|
Definition
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