Hormones and Their Effects Quiz

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Questions and Answers

What is the function of the parasympathetic division of the ANS?

  • Activate sweat glands
  • Reduce blood flow to digestive organs (correct)
  • Dilate eyes and bronchioles
  • Increase blood flow to muscles

Where does the sympathetic response originate from in the spinal cord?

  • Cervical ganglia
  • Lateral horn
  • Dorsal horn
  • Thoracolumbar system (correct)

Which ganglia are associated with the enteric nervous system and digestion?

  • Collateral ganglia (correct)
  • Thoracic chain ganglia
  • Cervical ganglia
  • Lumbar chain ganglia

How do sympathetic axons change as they pass through the ganglia?

<p>They become unmyelinated and longer (C)</p> Signup and view all the answers

What type of synapse is found in the sympathetic fibers running to the adrenal medulla?

<p>Adrenergic synapse (B)</p> Signup and view all the answers

Which cranial nerve carries fibers to control pupil size?

<p>CN III (C)</p> Signup and view all the answers

Which receptors are activated by nicotine in the cholinergic system?

<p>Nicotinic receptors (B)</p> Signup and view all the answers

What is the term used to refer to an area of a nerve that houses neurotransmitters but is not at the end like in the somatic nervous system?

<p>Varicosity (D)</p> Signup and view all the answers

What are baroreceptors important for in autonomic reflexes?

<p>Blood pressure regulation (A)</p> Signup and view all the answers

In which system does a long reflex synapse in the CNS?

<p>Parasympathetic system (A)</p> Signup and view all the answers

Which organs have autonomic tone, meaning one system exerts much more control than the other?

<p>Heart (A)</p> Signup and view all the answers

What happens if a person experiences orthostatic hypotension?

<p>Blood pressure and heart rate increase when standing up (C)</p> Signup and view all the answers

Which nervous system cannot have a short reflex?

<p>Somatic nervous system (D)</p> Signup and view all the answers

What happens if light enters one pupil?

<p>Both pupils constrict (D)</p> Signup and view all the answers

Which part of the body experiences referred pain if there's a conscious perception of autonomic pain in an unexpected area?

<p>Heart (C)</p> Signup and view all the answers

What is the control center for many homeostatic mechanisms?

<p>Hypothalamus (B)</p> Signup and view all the answers

Which hormone stimulates the release of bicarbonate to buffer acidic chime and inhibits hydrochloric acid production?

<p>Cholecystokinin (C)</p> Signup and view all the answers

What hormone is responsible for stimulating blood cell production in the bone marrow?

<p>Erythropoietin (A)</p> Signup and view all the answers

Which hormone, produced by the pancreas, stimulates glycogenesis and is anabolic?

<p>Insulin (A)</p> Signup and view all the answers

What is the role of angiotensinogen produced by the liver?

<p>An intermediate stimulus to help bone growth (C)</p> Signup and view all the answers

Which hormone is responsible for making a person feel full after eating and regulating bone metabolism?

<p>Leptin (C)</p> Signup and view all the answers

What hormone is secreted by the thymus and helps develop T lymphocytes?

<p>Thymosins (A)</p> Signup and view all the answers

Which hormone protects the fetus from immune rejection and prepares the breasts for lactation?

<p>(hCG) human chorionic gonadotropin (D)</p> Signup and view all the answers

What is the function of pancreatic polypeptide hormone secreted by PP cells in the pancreas?

<p>Role in appetite and pancreas secretions. (B)</p> Signup and view all the answers

Which organ produces atrial natriuretic peptide (ANP) in response to atrial stretch due to an increase in blood pressure?

<p>The heart (D)</p> Signup and view all the answers

What hormone is produced by the skeleton that inhibits calcitriol and stimulates insulin production?

<p>Fibroblast growth factor 23 (A)</p> Signup and view all the answers

Which type of anemia results from a lack of vitamin B12 or folate?

<p>Vitamin deficient anemia (A)</p> Signup and view all the answers

What is the main function of eosinophils among the granular leukocytes?

<p>Defense against parasitic worms (A)</p> Signup and view all the answers

What is the molecule made of 4 proteins and 4 irons that carries oxygen in erythrocytes?

<p>Hemoglobin (D)</p> Signup and view all the answers

What is the process by which leukocytes are drawn to a chemical?

<p>Chemotaxis (B)</p> Signup and view all the answers

What causes the shape change and reduced oxygen-carrying capacity in sickle cell anemia?

<p>Genetic change in erythrocyte shape (C)</p> Signup and view all the answers

What is the most common type of granular leukocyte known for its quick response against bacteria?

<p>Neutrophil (D)</p> Signup and view all the answers

What is the term for the percentage of oxygen in blood, measured by a pulse oximeter?

<p>Percent saturation (D)</p> Signup and view all the answers

What is the permissive effect in the context of hormones?

<p>A hormone enabling another hormone to act (D)</p> Signup and view all the answers

Which gland is described as the command center for the endocrine system?

<p>Hypothalamus (D)</p> Signup and view all the answers

What is the function of antidiuretic hormone (ADH)?

<p>Causes the kidneys to reabsorb more water (D)</p> Signup and view all the answers

What is the role of corticotropin-releasing hormone (CRH) from the hypothalamus?

<p>Activates adrenocorticotropic hormone (ACTH) in the anterior pituitary (B)</p> Signup and view all the answers

Which hormone regulates thyroid activity?

<p>Thyroid stimulating hormone (TSH) (B)</p> Signup and view all the answers

What causes the release of antidiuretic hormone (ADH) from the posterior pituitary?

<p>Signals from osmoreceptors (B)</p> Signup and view all the answers

What is the main function of gonadotropin-releasing hormone (GnRH) from the hypothalamus?

<p>Signals the anterior pituitary to release gonadotropins (A)</p> Signup and view all the answers

What is the role of growth hormone (GH) in the body?

<p>Promotes protein synthesis and tissue building (A)</p> Signup and view all the answers

Which gland connects to the hypothalamus by the infundibulum?

<p>Pituitary gland (C)</p> Signup and view all the answers

What happens when a certain amount of hormone or drug is floating in the blood?

<p>Downregulation happens due to overstimulation of cells. (C)</p> Signup and view all the answers

What do osmoreceptors do in relation to antidiuretic hormone (ADH) release?

<p>Send signals to release ADH when blood osmolarity changes. (B)</p> Signup and view all the answers

What is the main function of melanin-releasing hormone (MRH)?

<p>Stimulates melanin formation in melanocytes. (A)</p> Signup and view all the answers

What is the function of the medial forebrain bundle in relation to the hypothalamus?

<p>It communicates back to the hypothalamus through the amygdala. (A)</p> Signup and view all the answers

Which part of the brain is involved in memory and emotional response?

<p>Amygdala (A)</p> Signup and view all the answers

What is the role of the cardiovascular center in the medulla?

<p>Connecting to cardiac accelerator nerves to increase heart output (B)</p> Signup and view all the answers

How does nicotine affect the autonomic nervous system?

<p>It fires all preganglionic fibers in both divisions. (B)</p> Signup and view all the answers

Which drugs enhance the sympathetic response?

<p>Sympathomimetic drugs (A)</p> Signup and view all the answers

What type of hormones come from lipids?

<p>Steroids (C)</p> Signup and view all the answers

How do lipid soluble hormones travel through the cardiovascular system?

<p>They hitch a ride with proteins since they are hydrophobic. (D)</p> Signup and view all the answers

Which type of hormone travels to a hormone receptor on the cell membrane?

<p>Peptides (B)</p> Signup and view all the answers

What happens to activate proteins when cyclic adenosine phosphate (cAMP) is involved?

<p>$5(7 + 3)$ (D)</p> Signup and view all the answers

Why does phosphodiesterase (PDE) turn off cyclic adenosine phosphate (cAMP)?

<p>To regulate the cell's response by turning off cAMP if more hormones are not produced. (A)</p> Signup and view all the answers

What is the function of an alternate second messenger - calcium ion?

<p>Activates G protein to activate phospholipase C (PLC). (B)</p> Signup and view all the answers

What is the paracrine system's mode of action?

<p>It secretes a chemical to affect other nearby cells. (C)</p> Signup and view all the answers

What is the precursor to angiotensin for regulating blood pressure?

<p>Angiotensinogen (C)</p> Signup and view all the answers

What hormone decreases with aging?

<p>Estrogen (B)</p> Signup and view all the answers

Which hormone increases but can lead to osteoporosis?

<p>Parathyroid hormone (A)</p> Signup and view all the answers

What is the normal pH range of blood?

<p>7.35 - 7.45 (A)</p> Signup and view all the answers

What is responsible for coagulation and stopping bleeding?

<p>Platelets (C)</p> Signup and view all the answers

What is the percentage of red blood cells in blood known as?

<p>Hematocrit (A)</p> Signup and view all the answers

Where does hemopoiesis occur in the body?

<p>Red marrow in bones (B)</p> Signup and view all the answers

Which protein is the most common in blood plasma and transports fatty acids and steroid hormones?

<p>Albumin (C)</p> Signup and view all the answers

What causes the hemocytoblast to divide and differentiate to produce blood cells?

<p>Cytokines (C)</p> Signup and view all the answers

What is the main function of erythrocytes?

<p>Transport of oxygen and carbon dioxide (B)</p> Signup and view all the answers

Where do B cells mature?

<p>Bone marrow (A)</p> Signup and view all the answers

What contributes to immunity and inflammation?

<p>Cytokines (C)</p> Signup and view all the answers

What is the main function of parathyroid hormone (PH)?

<p>Increases blood calcium levels (C)</p> Signup and view all the answers

How does TSH stimulate tryiodothyronine (T3) and thyroxine (T4) secretion?

<p>By promoting iodine oxidation (A)</p> Signup and view all the answers

What is the main role of aldosterone produced by the adrenal cortex?

<p>Increases sodium levels (A)</p> Signup and view all the answers

Which gland is posterior to the hypothalamus and produces and secretes melatonin?

<p>Pineal gland (C)</p> Signup and view all the answers

What stimulates the retina of the eye to inhibit melatonin secretion from the pineal gland?

<p>Increase in blue light exposure (C)</p> Signup and view all the answers

What is the main effect of cortisol produced by the adrenal cortex?

<p>Inhibits the inflammatory response (D)</p> Signup and view all the answers

What happens as light fades away according to the text?

<p>Promotes drowsiness due to increased melatonin in the blood (C)</p> Signup and view all the answers

What is the role of androgens produced by the adrenal glands?

<p>Supplement estrogen production in females after menopause (D)</p> Signup and view all the answers

What is the main action of calcitonin released by the thyroid gland?

<p>Inhibits bone cell breakdown (B)</p> Signup and view all the answers

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