• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
An Introduction to the Hypothalamic–Pituitary–Gonadal Axis
An Introduction to the Hypothalamic–Pituitary–Gonadal Axis

... the proliferation phase to prepare for ovulation, the secretory phase after ovulation, and menstruation when conception does not occur. HPG axis activation in both males and females during puberty also causes individuals to gain secondary sex characteristics. HPG axis activation and deactivation als ...
HYPOTHALAMUS
HYPOTHALAMUS

... the median eminence, where they would have an opportunity to interact with the parvicellular neurosecretory system or even discharge neuroactive substances directly into the portal system. Plates 30, 32 show the distribution of vasopressin and oxytocin neurons in the PVN and SON. Plates 31 summarize ...
Key Facts on Male Infertility
Key Facts on Male Infertility

... Varicoceles (enlarged veins within the scrotum) are found in about 40% of men with infertility. How Often Does It Occur? Infertility is one of the most difficult experiences that a couple may face together. The couple may have a sense of loss and a feeling of uncertainty. It is a time, however, when ...
Effect of a phytoestrogen food supplement on
Effect of a phytoestrogen food supplement on

... cancer chemoprotective properties via a number of nonreceptor-related mechanisms, including inhibition of protein tyrosine kinases [2], impaired DNA topoisomerase activities and protection against DNA damage [3,4], and altered sex hormone metabolism and bioavailability [5–8]. However, phytoestrogens ...
СПИСЪК НА ПУБЛИКАЦИИ И РЕЗЮМЕТА
СПИСЪК НА ПУБЛИКАЦИИ И РЕЗЮМЕТА

... Introduction: Elevated total homocysteine (tHCY) is an established risk factor for atherosclerotic vascular disease, but the intimate mechanism is still not well understood. The study was designed to estimate tHCY concentration and other risk factors in coronary heart disease (CHD) males, evaluating ...
Three-dimensional reconstruction of the lentiform nucleus from
Three-dimensional reconstruction of the lentiform nucleus from

... method (Adobe Photoshop 3.0 for Macintosh) and the obtained traces were transformed into a 3-D reconstruction program (Adobe Dimension 2.0 for Macintosh). The thickness of each serial section (100 µm) and the distance between two consecutive serial sections (500 µm) were taken into consideration dur ...
Andropause: Pathophysiology, Problems, and
Andropause: Pathophysiology, Problems, and

... don’t ingest alcoholic beverages. 3 Testosterone availability is even lower among men with chronic diseases. 4 Testosterone deficiency can be associated with decreased muscle mass and strength, 5 diminished bone mineral density, 6 hip fracture, 7 and loss of sexual interest. 8 Hypoandrogenism has al ...
The Effects of Local Fetal Brain Extract Administration
The Effects of Local Fetal Brain Extract Administration

... the early phase of regeneration. On the base of electromyographical records, the delay time (conduction velocity) was measured on different post-operation days (Table 1). This parameter was used to evaluate the recovery of injured nerve which may include the regeneration of nerve fibers and formatio ...
Roof Rat Control around Homes and Other Structures
Roof Rat Control around Homes and Other Structures

... in appearance. A quick or casual observation of any one of these rats can easily result in misidentification. However, the ecology and behavior of roof rats differ significantly from that of Norway rats and native rats. These ecological and behavioral differences are important to consider when imple ...
L9 - Internal structure of brain stem new
L9 - Internal structure of brain stem new

...  The reticular formation controls the level of consciousness, the cardiovascular system and the respiratory system.  Ascending sensory system pass through the brain stem en route to thalamus. First-order proprioceptive fibers in the dorsal column relay in the dorsal column nuclei. Second-order fib ...
Hypothalamus
Hypothalamus

... Sensory relay - Ventral posterior group all sensation from body and head, including pain ...
Effect of deep brain stimulation on substantia nigra neurons in a
Effect of deep brain stimulation on substantia nigra neurons in a

... Background Parkinson's disease (PD) is a common neurodegenerative disease, which occurs mainly in the elderly. Recent studies have demonstrated that apoptosis plays an important role in the occurrence and development of PD. Subthalamic nucleus deep brain stimulation (STN-DBS) has been recognized as ...
Lecture 35 (Motivation)
Lecture 35 (Motivation)

... Goal of long-term feeding behavior: Maintain long-term energy stores (fat). Fat has twice the energy (per weight) as glucose and doesn’t require excess water storage like glucose (fat isn’t osmotically active). The body has a set-point for the amount of fat it would like stored on the body. ...
Ustrojstvo sive i bijele tvari međumozga
Ustrojstvo sive i bijele tvari međumozga

... Corpus geniculatum laterale – relay of visual impulses to  the visual cortex from retina ...
Acute effects of interferon-a administration on testosterone
Acute effects of interferon-a administration on testosterone

... within experiments (differences compared with t ˆ 0) were tested by analysis of variance and Fisher's LSD test for multiple comparison, as indicated. Data between experiments (IFN-a and control data) were tested by Wilcoxon's test. A P value < 0.05 was considered to ...
Prenatal morphine exposure alters the layer II/III pyramidal neurons
Prenatal morphine exposure alters the layer II/III pyramidal neurons

... When the apical dendrites and the basal dendrites were clustered, a significant difference has been observed in total lengths of basal dendrite between the two groups (F1,19 5 7.52, P < 0.05), but not those of apical dendrites (F1,19 5 3.35, P > 0.05) (Fig. 5). As measured by Sholl analysis, the int ...
The Endocrine System The Pituitary Gland
The Endocrine System The Pituitary Gland

... glands in the endocrine system  They regulate the body’s calcium and phosphorus balances  Tetany- condition caused by too low a calcium level; muscle spasms and cramps ...
Male lactation: why, why not and is it care?
Male lactation: why, why not and is it care?

... duct formation and, at puberty, proliferation of glandular and stromal tissue. At first glance, the pregnancy/lactation stage of mammary development appears impossible for males. However, it is the hormonal changes that occur during pregnancy rather than the presence of a developing foetus that appe ...
HIRSUTISM
HIRSUTISM

... • Useful in mild hirsuitism • Must be used alongwith medical therapy • Methods are: shaving, bleaching, waxing, plucking,electrolysis & laser. • Laser & electrolysis are most satisfactory ...
Histology Hormones
Histology Hormones

... unconsciousness and even death (usually the result of an overdose of insulin). Hypoinsulinism: Type I Diabetes (insulin – dependent diabetes mellitus)- elevated glucose levels in the blood and urine. Over time diabetics experience vascular and neural problems. Secondarily, poor circulation may lead ...
29.2 Neurons
29.2 Neurons

... • Neurotransmitters- Chemical signals that pass between neurons. – Impulse reaches terminal. – Neurotransmitters released into synapse. --Bind to receptors on the next neuron and stimulate the next action potential, synapse ...
6. Repro Endocrinology SV
6. Repro Endocrinology SV

... bottom of 3rd ventricle of brain secretes neurohormones that influence synthesis and release of pituitary hormones examples:  gonadotropin releasing hormone (GnRH)  thyrotropin releasing hormone (TRH)  dopamine - Prolactin releasing inhibiting factor ...
Body Rhythms &amp; Mental States Chapter 5: Consciousness
Body Rhythms & Mental States Chapter 5: Consciousness

... cluster of cells in the hypothalamus called the suprachiasmatic nucleus (SCN) ...
Pain relief produces negative reinforcement through activation of
Pain relief produces negative reinforcement through activation of

... appetitive rewards promote an efflux of dopamine in the NAc (15, 16). It has been suggested that NAc neurons signal reward value and participate in behavioral decision making (17–21). We hypothesized that relief of ongoing pain would activate the mesolimbic dopamine pathway and that such activation i ...
morphometric parameters of the structures of the medulla oblongata
morphometric parameters of the structures of the medulla oblongata

... Abstract. The results of the study of morphometric parameters and structure of medulla oblongata in human fetuses at 17-18 weeks of prenatal development with sacrococcygeal teratoma are presented. The dimensions of nuclei of medulla oblongata, shapes and the degree of differentiation of neurons have ...
< 1 ... 22 23 24 25 26 27 28 29 30 ... 37 >

Sexually dimorphic nucleus

The sexually dimorphic nucleus (SDN) is an ovoid, densely packed cluster of large cells located in the medial preoptic area (POA) of the hypothalamus which is believed to be related to sexual behavior in animals.Thus far, for all species of mammals investigated, the SDN has been repeatedly found to be considerably larger in males than in females. The volume of the SDN was 2.2 times as large in males as in females and contained 2.1 times as many cells. The human SDN was elongated in females and more spherical in males. No sex differences were observed in the human SDN in either cell density or mean diameter of the cell nuclei. The volume and cell number of the human SDN considerably decreases with age; although, the decrease in cell number is both sex and age-specific. In males, a substantial decrease in the cell number of the human SDN was observed between the age of 50-60 years. Cell death was more common in females than males, especially among those older than 70 years of age. The SDN cell number in females can drop to 10-15% that found in early childhood.SDN and its homologues exist widely in human, mammal, and some other animal brains, including: the third interstitial nucleus of the anterior hypothalamus (INAH3) in humans; ovine sexually dimorphic nucleus (oSDN) in the medial preoptic area/anterior hypothalamus (MPOA/AH) in sheep; sexually dimorphic nucleus in the preoptic area (SDN-POA) in rats; anterior hypothalamic nucleus (AHdc) in macaques; specific area in medial preoptic nucleus (POM) in quails; etc.↑ ↑ ↑ ↑
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report