prostate gland

Examples of prostate gland in the following topics:

• Male Reproductive Anatomy

  • The bulk of the semen comes from the accessory glands associated with the male reproductive system, including the seminal vesicles, the prostate gland, and the bulbourethral gland .
  • The glands make a solution that is thick, yellowish, and alkaline.
  • The walnut-shaped prostate gland surrounds the urethra, the connection to the urinary bladder.
  • The gland is a mixture of smooth muscle and glandular tissue.
  • The bulbourethral gland, or Cowper's gland, is an exocrine gland which secretes a clear fluid known as pre-ejaculate that is generated upon sexual arousal.

• Predicting Disease Risk at the Individual Level

  • He was also predicted to have a 23 percent risk of developing prostate cancer and a 1.4 percent risk of developing Alzheimer's.
  • Their recommendation was based on evidence that screening does not reduce the risk of death from prostate cancer.
  • Prostate cancer often develops very slowly and does not cause problems, while the cancer treatment can have severe side effects.
  • PCA3 is a gene that is expressed in prostate epithelial cells and overexpressed in cancerous cells.
  • A high concentration of PCA3 in urine is indicative of prostate cancer.

• Thyroid Gland

  • The thyroid gland, the largest endocrine gland, is responsible for the production of the hormones T3, T4, and calcitonin.
  • The thyroid gland, one of the largest endocrine glands in the body, is located in the neck, just below the larynx and in front of the trachea .
  • It is a butterfly-shaped gland with two lobes that are connected by the isthmus.
  • The thyroid gland produces the hormones T3 (triiodothyronine) and T4 (thyroxine).
  • The location of the thyroid gland is in the neck below the larynx and in front of the trachea; it is the largest endocrine gland in the body, producing T3, T4, and calcitonin.

• Parathyroid Glands

  • The parathyroid glands are small endocrine glands that produce parathyroid hormone.
  • These glands are located on the posterior surface of the thyroid gland.
  • Normally, there is a superior gland and an inferior gland associated with each of the thyroid's two lobes .
  • The parathyroid glands are located on the posterior of the thyroid gland.
  • Describe how the parathyroid glands regulate calcium levels in the blood

• Pineal Gland and Gonads

  • The pineal gland is a small endocrine gland in the brain .
  • The main hormone produced and secreted by the pineal gland is melatonin.
  • Collaterals from the visual pathways innervate the pineal gland.
  • The gonads are additional types of endocrine glands .
  • The pineal gland is an endocrine gland located in the middle of the brain.

• Hypothalamic-Pituitary Axis

  • The hypothalamus, an endocrine organ, regulates the anterior pituitary gland and transports hormones along the posterior pituitary gland.
  • Endocrine glands contain no ducts; they release their secretions directly into the intercellular fluid or into the blood.
  • The collection of these glands makes up the endocrine system.
  • The pituitary gland, sometimes called the hypophysis or "master gland," is located at the base of the brain in the sella turcica, a groove of the sphenoid bone of the skull.
  • The pituitary gland is located at (a) the base of the brain and is (b) connected to the hypothalamus by the pituitary stalk.

• Humoral, Hormonal, and Neural Stimuli

  • A number of endocrine glands release hormones when stimulated by hormones released by other endocrine glands.
  • For example, the hypothalamus produces hormones that stimulate the anterior portion of the pituitary gland.
  • The anterior pituitary, in turn, releases hormones that regulate hormone production by other endocrine glands.
  • In some cases, the nervous system directly stimulates endocrine glands to release hormones, which is referred to as neural stimuli.
  • The hypothalamus stimulates the anterior pituitary gland, via hormones, to release thyroid-stimulating hormone (TSH).

• Characteristics of Mammals

  • Sebaceous glands are located over most of the body.
  • Sweat glands are located over most of the body surface in primates.
  • Apocrine glands, or scent glands, secrete substances that are used for chemical communication, such as in skunks.
  • Mammary glands produce milk that is used to feed newborns.
  • Mammary glands are probably modified sebaceous or eccrine glands, but their evolutionary origin is not entirely clear.

• Adrenal Glands

  • Adrenal glands are composed of the adrenal cortex and medulla; both produce hormones that control essential body functions and responses.
  • Adrenal glands are a pair of ductless glands located above the kidneys .
  • The adrenal glands consist of an outer adrenal cortex and an inner adrenal medulla, which secrete different hormones.
  • Adrenal glands are located on top of the kidneys.
  • These glands are composed of the adrenal cortex and the adrenal medulla.

• Lipid-Derived, Amino Acid-Derived, and Peptide Hormones

  • Other steroid hormones include aldosterone and cortisol, which are released by the adrenal glands along with some other types of androgens.
  • Examples of amino acid-derived hormones include epinephrine and norepinephrine, which are synthesized in the medulla of the adrenal glands, and thyroxine, which is produced by the thyroid gland.
  • The pineal gland in the brain makes and secretes melatonin, which regulates sleep cycles.
  • The peptide hormones include molecules that are short polypeptide chains, such as antidiuretic hormone and oxytocin produced in the brain and released into the blood in the posterior pituitary gland.