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The excitement phase (also known as the arousal phase or initial excitement phase) is the first stage of the human sexual response cycle, which occurs as a result of physical or mental erotic stimuli, such as kissing, making out, fantasizing or viewing erotic images, that leads to sexual arousal. During this stage, the body prepares for sexual ...
The hormones oxytocin and vasopressin are implicated in regulating both male and female sexual motivation. Oxytocin is released at orgasm and is associated with both sexual pleasure and the formation of emotional bonds. [13] Based on the pleasure model of sexual motivation, the increased sexual pleasure that occurs following oxytocin release ...
[50] [51] Heterosexual men experience much higher genital and subjective arousal to women than to men. This pattern is reversed for homosexual men. [52] Studies have found that women have a non-category-specific genital response pattern of sexual arousal, meaning their genital responses are only modestly related to their preferred category. [53]
Sex hormone. Sex hormones, also known as sex steroids, gonadocorticoids and gonadal steroids, are steroid hormones that interact with vertebrate steroid hormone receptors. [1] The sex hormones include the androgens, estrogens, and progestogens. Their effects are mediated by slow genomic mechanisms through nuclear receptors as well as by fast ...
Testosterone is the primary male sex hormone and androgen in males. [3] In humans, testosterone plays a key role in the development of male reproductive tissues such as testicles and prostate, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of body hair.
LH is released from the pituitary gland along with FSH in response to GnRH release into the hypophyseal portal system. [4] Pulsatile GnRH release causes pulsatile LH and FSH release to occur, which modulates and maintains appropriate levels of bioavailable gonadal hormone: testosterone in males and estradiol in females subject to the requirements of a superior feedback loop. [3]
Sexual differentiation in humans is the process of development of sex differences in humans. It is defined as the development of phenotypic structures consequent to the action of hormones produced following gonadal determination. [1] Sexual differentiation includes development of different genitalia and the internal genital tracts and body hair ...
increases both systolic and diastolic blood pressure, glycogenolysis, lipolysis increases metabolism, etc. 4. Triiodothyronine. T 3. Amino acid derivative. peripheral tissue of thyroid gland. Thyroid follicular cell / Tyrosine. thyroid hormone receptor. nearly every cell in the body.