Intro, Embryology and Anatomy Flashcards
Means “spit mucus”
Pituitary
The brain directs the pituitary to secrete hormones that regulate other
Endocrine glands
It was designated as the “master gland” because without this, there was a cessation of growth, together with profound alterations in intermediary metabolism and failure of gonadal, thyroidal, and adrenal function
Pituitary gland
The pituitary is also referred to as the __, from Greek meaning “undergrowth”
Hypophysis
Features that distinguish the function of the pituitary include:
Feedback loops
Pulsatile secretions
Diurnal rhythms
Environmental or external modification of its performance.
Three distinct parts of the pituitary
Anterior pituitary, or adenohypophysis
Intermediate lobe, or pars intermedialis
Posterior pituitary, or neurohypophysis
Poorly developed in humans and has little functional capacity other than to confuse radiologists by forming nonfunctional, benign, cystic enlargements of the pituitary.
Intermediate Lobe
Arises from the diencephalon, is responsible for the storage and release of oxytocin and vasopressin
Posterior pituitary
Thee largest portion of the gland, originates from Rathke’s pouch, an evagination of buccal ectoderm that progressively extends upward and is eventually enveloped by the sphenoid bone.
Anterior pituitary
The creation of __ and __ are critical event in the formation of the hypothalmic-hypophyseal unit
Median Eminence and Pituitary stalk
Pituitary function can be detected between the
7th and 9th weeks of gestation
Prolactin-secreting cell
Lactotrophs
Growth hormone [GH]–secreting cells
Somatotrophs
Thyroid-stimulating hormone [TSH]–secreting cells)
Thyrotrophs
Adrenocorticotropin hormone [ACTH]–secret- ing cells
Corticotrophs
