Cardiovascular System: Blood Chapter 18 Quiz
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Questions and Answers

Which part of the autonomic nervous system is responsible for the 'fight or flight' response?

  • Sympathetic (correct)
  • Autonomic
  • Somatic
  • Parasympathetic

Where do sympathetic axons become unmyelinated?

  • Before reaching the ganglia
  • After leaving the spinal cord (correct)
  • At the collateral ganglia
  • Before branching to various organs

Which division of the spinal cord gives rise to the sympathetic division of the ANS?

  • Thoracic (correct)
  • Lumbar
  • Cervical
  • Sacral

Which part of the autonomic nervous system is associated with digestion and absorption?

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

Which organelle is absent in erythrocytes?

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

What is the function of a pulse oximeter?

<p>Measuring oxygen saturation in the blood (A)</p> Signup and view all the answers

Which condition results from a shortage of RBC stem cells?

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

Which leukocyte is involved in attacking bacteria and is the most common granular leukocyte?

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

What is the function of basophils in the immune system?

<p>Intensifying inflammation like mast cells (C)</p> Signup and view all the answers

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

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

What causes sickle cell anemia?

<p>Irregular shape of erythrocytes and less oxygen carried (D)</p> Signup and view all the answers

What condition results from too few leukocytes?

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

What can lead to polycythemia?

<p>Excessive plasma levels resulting in increased blood viscosity (B)</p> Signup and view all the answers

What is the role of monocytes in the immune system?

<p>Turning into macrophages and dendritic cells to clean up the body (A)</p> Signup and view all the answers

What is the primary role of B cells in the immune system?

<p>Producing antibodies to fight off infections (A)</p> Signup and view all the answers

Which hormone is responsible for decreasing blood glucose levels by getting glucose into cells that need energy?

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

What is the role of estrogen in pregnancy?

<p>Protects the fetus from immune rejection (D)</p> Signup and view all the answers

Which hormone inhibits the release of insulin and glucagon?

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

Which hormone is responsible for releasing hydrochloric acid in response to stomach distention?

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

What is the function of cholecystokinin?

<p>Promotes bile production (B)</p> Signup and view all the answers

What is the role of atrial natriuretic peptide (ANP) in the body?

<p>Inhibits renin secretion and the renin-angiotensin-aldosterone system (A)</p> Signup and view all the answers

What is the function of erythropoietin (EPO) in the body?

<p>Stimulates blood cell production in the bone marrow (D)</p> Signup and view all the answers

What is the active form of vitamin D?

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

What does fibroblast growth factor 23 do in the body?

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

Which organ produces insulin like growth factor?

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

Which hormone increases sodium levels?

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

What element comes from carbohydrates and sugars used as fuel for the body?

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

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

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

What is the process of breaking down stored triglycerides into free fatty acids or glycerol?

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

Which gland produces and secretes melatonin?

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

Which hormone makes a person feel full after eating and regulates bone metabolism?

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

What causes Cushing’s disease?

<p>Too much cortisol (A)</p> Signup and view all the answers

Which hormone develops the male reproductive system and causes maturation of sperm cells?

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

What is the role of iodine in the formation of thyroid hormone?

<p>Attaches to tyrosine to form thyroid hormone (B)</p> Signup and view all the answers

Which hormone works on a negative feedback loop?

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

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

<p>Decreases blood calcium levels (B)</p> Signup and view all the answers

What is the primary function of the adrenal medulla?

<p>Produces epinephrine and norepinephrine (D)</p> Signup and view all the answers

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

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

Which hormone helps to supplement androgen production of the gonads?

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

What stimulates the pineal gland to inhibit melatonin secretion?

<p>Photons of light stimulating the retina of the eye (B)</p> Signup and view all the answers

What is the precursor to angiotensin that helps regulate blood pressure?

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

Which hormone decreases with aging?

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

What is the function of white blood cells (WBC) in the body?

<p>Protect from external and internal threats (C)</p> Signup and view all the answers

Which protein transports fatty acids and steroid hormones in the plasma?

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

What is the approximate percentage of erythrocytes in blood?

<p>45% (D)</p> Signup and view all the answers

Where does hemopoiesis or hematopoiesis occur in the body?

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

What causes erythrocyte production?

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

What is the main function of erythrocytes?

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

What is the most common plasma protein?

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

What stimulates resistance to disease?

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

Which cells mature in bone marrow?

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

What protein is important for clotting?

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

What type of fibers run to the adrenal medulla and have no synapse in a ganglia?

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

Which cranial nerve carries fibers to control pupil size?

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

Which type of synapse is activated by acetylcholine?

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

What is the term for an area of a nerve that houses neurotransmitters, spread through the length of the nerve?

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

Which receptors are important for autonomic reflexes, especially in maintaining blood pressure?

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

In autonomic reflexes, where must a long reflex synapse?

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

Which system experiences autonomic tone, where one system exerts much more control than the other system normally does?

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

Which condition involves BP and HR increasing when a person stands up and changes head altitude?

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

"Referred pain" occurs when conscious perception of autonomic pain is felt in an unexpected area. Which organs are mentioned as examples of this phenomenon?

<p>Heart, spleen, appendix, ovaries (C)</p> Signup and view all the answers

Which receptors are involved in maintaining homeostasis by responding to neurotransmitters released by both sympathetic and parasympathetic systems?

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

In autonomic reflexes, what type of response is produced in the periphery if a short reflex occurs?

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

What is the control center for many homeostatic mechanisms?

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

Where does the hypothalamus receive input from?

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

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

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

What is the cardiovascular center responsible for?

<p>Increasing heart output (B)</p> Signup and view all the answers

Which of the following drugs reduce the sympathetic response?

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

What type of hormones are secreted by endocrine organs?

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

Where do lipid soluble hormones travel to in order to cause a change?

<p>Hormone receptor in the cell (A)</p> Signup and view all the answers

Which hormone receptor is activated by amino acid hormones?

<p>Receptor in the cell membrane (D)</p> Signup and view all the answers

What is the role of cyclic adenosine phosphate (cAMP) as a second messenger?

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

What is the primary function of growth hormone (GH)?

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

Which hormone stimulates the release of corticosteroid hormones from the adrenal cortex?

<p>Adrenocorticotropic hormone (ACTH) (C)</p> Signup and view all the answers

What happens when a cell undergoes upregulation?

<p>The target cell receptors increase and become more sensitive to a hormone or a drug (B)</p> Signup and view all the answers

Which gland is like the command center for the endocrine system?

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

What is the role of oxytocin during childbirth?

<p>Stimulates positive feedback loop associated with childbirth (B)</p> Signup and view all the answers

How does antidiuretic hormone (ADH) affect the kidneys?

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

Which hormones enable another hormone to act?

<p>Permissive effect hormones (C)</p> Signup and view all the answers

What would be the result of too much thyroid stimulating hormone (TSH)?

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

How does downregulation impact cells?

<p>They decrease the number of receptors due to lots of stimulation (D)</p> Signup and view all the answers

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

<p>Activating adrenocorticotropic hormone (ACTH) (C)</p> Signup and view all the answers

What is the role of prolactin if a woman is not pregnant?

<p>Restricted by prolactin-inhibiting hormone (PIH) from the hypothalamus (B)</p> Signup and view all the answers

What controls reproductive activity and the end of reproduction in women?

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

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