The pituitary gland Lecture 2

What are the various stimuli control the production and release of hormones?

Humoral control

Neural control

hormonal control

What is humoral control (humor refers to body fluids) ?

Secrete hormones in response to changing levels of ions or nutrients.

what is neural control?

Nerve fibers stimulate hormone release.

what are the hormonal control?

Hormones promote the release of other hormones.

what is an example of hormonal control?

Hypothalamus => Pituitary => Endocrine organ

what hormonal control of hormone release do with negative feedback?

write down

how are hormones released

in rhythmic patterns

can the brain override humoral and hormonal control?

yes the nervous system has final says with on and off

how are hormones reduction regulated?

hormones rapidly cleared by kidneys and liver

where are the breakdown products found

in Urine

where is the pituitary gland located

under and connected to the hypothalamus

what the two lobes of the pituitary?

anterior and posterior lobe pituitary

What is the posterior lobe pituitary do

Receives, stores, and releases ready-made neurohormones

what are the posterior pituitary disseminates 2 hormones

Oxytocin

Antidiuretic Hormone (ADH)

what is oxytocin?

Stimulates uterine contraction.

Also acts as a neurotransmitter in brain.

it promotes nurturing bonding and trust

what is the Antidiuretic hormone (ADH)

it is inhibits urine formation

Helps prevent dehydration and water overload

Water levels in blood monitored by the hypothalamus

When water levels decrease

ADH is released

what does ADH effect kidneys?

kidneys reabsorb water for urine back into the blood.

what is ADH deficiency?

Causes intense thirst and huge urine output

it can lead to severe dehydration

what is ADH hypersecretion?

Marked by retention of fluid / Weight gain

Headache and disorientation due to brain edema