BIOM2011 - Endocrinology

20 terms by jonathanboyle92 

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Endocrine

A control system that acts by secreting hormones directly into the bloodstream, which then travel to other parts of the body to act on effectors (cells, tissues, organs)

G-protein coupled

Receptor type is important for oxytocin, GHRH, somatostatin, dopamine?

Tyrosine kinase

Receptor type is important for insulin, IGF-1?

Cytokine

Receptor type is important for EPO, leptin, prolactin and GH?

Steroid

Type of receptor is important for oestrogen

Homeostasis

The state of equilibrium of the body that is maintained by dynamic processes of feedback and regulation

Blood brain barrier

Important process for protecting neurones from blood

Prolactin

Acts on alveolar epithelial cells in the breast to induce synthesis and secretion of milk

Oxytocin

Acts on myoepithelial cells in the breast to induce contraction and ejection of the milk

Hypothalamus

Regulates and coordinates responses to changes in the external and internal environment

Posterior pituitary gland

Is made up of nerve terminals. Oxytocin and vasopressin are two important neurohormones released from

Anterior Pituitary Gland

Endocrine cells that secrete hormones into the general circulation

Somatotrophs

GH (growth hormone), stimulates growth

Lactotrophs

Prolactin - memory gland, lactation

Gonadotrophs

LH (luteinising hormone)
FSH (follicle stimulating hormone), both stimulate gonads

Thyrotrophs

TSH (thyroid stimulating hormone)

Corticotrophs

ACTH (adrenocorticotrophic hormone)

Dopamine

Releasing inhibitory factor for prolactin

Somatostatin

Releasing inhibitory factor for growth hormone (GH)

Growth hormone

- Major determinant of growth
- Increase number and size of cells in soft tissues
- Increase thickness and length of long bones

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