Ch 20

Check all that are ways in which PTH affects targets organs

Checked: -PTH stimulates osteoclasts to resorb bone and release calcium ions into the bloodstream -PTH stimulates calcitrol synthesis to promote calcium absorbtion in the small intestine Unchecked: -PTH encourages the excretion of calcium ions into the filtrate that becomes urin in the kidneys -PTIH stimulates osteoblasts to create new bone matrix using excess calcium in the blood

check all that are a function of oxytocin

Checked: -Stimulates smooth muscle contraction in the uterine wall in females -Stimulates milk ejection from mammary glands -Stimulates contraction of smooth muscle of male reproductive tract Not checked: -Stimulates sperm production -Stimulates growth of ovarian follicles

Check all that are true regarding the function of the thymus

Checked: -The thymus helps regulate body immunity -The thymus secretes thymopoietin and thymosins Unchecked: -The thymus secretes melatonin -The thymus does not produce any hormones, but stores hormones that are produced by the hypothalamus

Select the hormones that are secreted from the posterior pituitary

Checked: Antidiuretic hormone (ADH) Oxytocin (OT) Not checked: TRH GHIH

check all that are hormones produced by the adrenal cortex

Checked: Corticosteroids Mineralcorticoids Glucocorticoids Gonadocorticoids Not checked: Norepi Epinephrine

Check all that are true of the endocrine system

Checked: It communicates using hormones secreted into the bloodstream -it causes metabolic activity changes in its target cells -Its effects last from minutes to weeks -its effects may continue after the stimulus is removed Not checked: -it typically has localizes, specific effects in the body -It communicates using neurotransmitters

Sort each description or image by wether it characterizes endocrine or exocrine glands.

Endocrine: secretions are distributed through te blood stream Secretions serve as form of cell to cell communication Glands highly exhibit density capillaries Secretions belong to three chemical categories: steroids, monoamines, and peptides, on extra Exocrine: -secretions are released via ducts onto epethielial tissue -Secretions serve to lubricate mucosal membrans -Secretions might contain metabolic waste and antimicrobial functions two extra

Drag each label to the correct bod to indicate wether the secretion is endocrine or exocrine in nature.

Endocrine: Testosterone, prolactin, eryhtropoietin, triiodothyronine, thyroxine, oxytocin Exocrine: sebum, mucus, pepsin, sweat, pancreatic juice, saliva

Which hormone secreted by the pancreatic islet cells functions to increase blood glucose levels?

Glucogon

thyroid hormone stimulates the anterior pituitary to release

Growth Hormone (GH)

Drag each label into the apporpriate position to identify which chemical classification it describes

Hydrophobic: -Requiere a transport protien -Pass direcelty through a membrane -Bind to receptors in the cells nucleus -Directly affect transport rates -elicit responses over several hours to days Hydrophillic: -Bind to membrane bound receptors -require second messenger systems -Utilize cAMP, Dag OR IP3 systems -Elicit responses almost immediately

Adrenal medulla releases hormones as a result of stimulation by the

Hypothalamus

Match the hypothalamic hormone with its effect on the pituitary gland

Increased secretion of ACTH: CRH Increases secretion of FSH and LH: GnRH Increases secretion of prolactin: Prolactin Releasing Factor Increases secretion of GH: GHRH

Match each hormone description to the correct abbreviation

Name means against urine - ADH Name means near the thyroid - PTH Name meas "promotin milk production" - PRL Named for effect on gamete production - FSH Named for production by the head of an amino acid hormone - ANP Named for iodine molecule numbers - T3 Affecting thyroid directly - TSH GONADS - ACTH Follicle conversion into corpus luteum - LH Adrenal gland cortex -ACTH Relase of ACTH - CRH

Label the components of the adrenal glands in the figure

Organ: Outermost/capsule Middlemost/Adrenal cortex Innermost/adrenal medulla Tissue: Outermost/zona glomerulosa Big spotted pink: Zona fasciculata Under: Zona reticularis

match the hormone secreted by the anterior pituitary with its target

Ovaries in females and testes in males: FSH and LH Thyroid gland: TSH Mammary glands in females: PRL Prolactin Adrenal cortex: ACTH Almost every cell in the body: Growth Hormone

The pancreas is mostly composed of groups of cells called

Pancreatic acini

Match the cell of the pancreas with the hormones it secretes

Pantratic polypeptide: F cells Somatostatin: Delta cells Insulin: Beta cells Glucogon: Alpha cells

Match the hormone with its function

Regulate the balance of electrolytes: mineralcorticoids Sex hormones:Gonadocorticoids Elevate blood glucose levels: glucocorticoids

Place the following endocrine glands in order of their location from superior to inferior

Superior to inferior Hypothalamus Pituitary gland Thyroid gland Suprarenal glands Pancreas Ovaries

In the thyroid gland, where are iodine molecules converted to iodine?

Thyroid follicle lumen

Labor the structures of hypothalamic-hypophyseal portal system

Top plexus-primary plexus Top vein anterior- hypophyseal portal vein Anterior plexus- secondary plexus Lower single vein- anterior hypophyseal vein