Station 1: Pituitary Gland and the Hypothalamus Flashcards
What is the hollow called that the pituitary gland sits in and in what one of the skull is it situated
Sell turcica
Sphenoid bone
How is the optic chiasm related to the pituitary gland
Its sits above the pituitary gland
Which fibres from the optic nerve, cross over the opposite side at the chiasm
Nasal
If there is a defect due to pituitary gland enlargement what would it be
Bitemporal hemianopia
Name features of the pituitary gland
Maxillary body Posterior lobe Infundibulum Pars intermedialis Anterior lobe Optic chiasm Hypothalamus
Which is the larger lobe of the pituitary gland
Anterior
Which of the lobes is glandular and manufacture hormones
Anterior
What is the function of the posterior lobe
Neural
Releases Vasopressin and Oxytocin
Name the 2 types of chromopils
Acidophil
Basophil
What are Acidophils secretory products
Somatotrophs- GH–> General and Chondrocytes
Mammotrophs- Prolactin–> Breast producing tissue
What are Basophil secretory products
Cortiocotrophs- ACTH and MSH–>Adrenal cortex and melanocytes
Thyrotrophs- TSH–> Follicular epithelium of thyroid gland
Gonadotrophs- FSH and LH –>Follicular cells and Sertoli cells
What are the main secretory cells of the posterior pituitary
Non-myelinated axons
What hormones are secreted from the posterior pituitary gland
Vasopressin (ADH)
Oxytocin
What is the arterial blood supply of the pituitary gland
Internal carotid artery
Superior hypophysiall and inferior hypophysial- posterior
How does the hypothalamus communicate with the anterior pituitary
Via capillary portal system
