Lymphoid Organs and Body Defenses Quiz

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Where are the tonsils located in the human body?

Over the heart

In the LUQ of the abdomen

Behind the liver

In the pharyngeal mucosa (correct)

Which lymphoid organ filters bacteria and viruses from the blood?

Skin

Tonsils

Spleen (correct)

Thymus gland

What is the first line of defense in the body's immune system?

Skin (correct)

Inflammatory response

Natural killer cells

Lymphocytes

Which type of immune response is known as the adaptive immune response?

(Adaptive) immune response Signup and view all the answers

What is the main function of the thymus gland?

Programs lymphocytes Signup and view all the answers

What type of immune response occurs following re-exposure to a particular antigen?

Secondary immune response Signup and view all the answers

When does the primary immune response typically begin following exposure to an antigen?

3-6 days Signup and view all the answers

What happens to the antibody titre after the primary immune response?

Falls within 28 days Signup and view all the answers

Which cells remain after the primary immune response and contribute to long-term immunity?

Memory cells (B and T) Signup and view all the answers

Which method of acquiring immunity involves receiving antibodies from an external source?

Passive immunity Signup and view all the answers

In which case is a person naturally immune to a disease due to having the disease previously?

Natural, Active immunity Signup and view all the answers

What is the function of the stomach lining folds called rugae?

To begin digestion of proteins Signup and view all the answers

Which substance is needed for vitamin B12 absorption in the stomach?

Intrinsic factor Signup and view all the answers

What is the role of pepsin in the stomach?

Digests proteins Signup and view all the answers

Which of the following is NOT true about gastric juice?

Functions to absorb nutrients directly into the blood Signup and view all the answers

What is the pH optimum for the activity of active pepsin in gastric juice?

$pH ext{ optimum} < 2$ Signup and view all the answers

Where are most of the structures of the nephron located?

In the cortex Signup and view all the answers

Which blood vessel brings blood to the glomerulus for filtration?

Interlobular artery Signup and view all the answers

What is the site of filtration in the kidney?

Bowman’s capsule Signup and view all the answers

Which process in urine formation separates substances by particle size?

Filtration Signup and view all the answers

What surrounds the capsular space in the renal corpuscle?

Bowman's capsule Signup and view all the answers

Which part of the nephron is responsible for reabsorption and secretion?

Proximal convoluted tubule Signup and view all the answers

What is the function of the Cowper's gland?

Neutralizes acidic pH of the urethra Signup and view all the answers

Where are the seminal vesicles located in the male reproductive system?

Posterior to the bladder Signup and view all the answers

What is the primary function of the prostate gland in the male reproductive system?

Produce milky fluid that inhibits bacteria Signup and view all the answers

Which structure contracts to propel sperm through the ejaculatory duct?

Seminal vesicle Signup and view all the answers

What is the role of fructose in seminal fluid?

Nourishes and activates sperm Signup and view all the answers

Which part of the male reproductive system surrounds the urethra and is inferior to the urinary bladder?

Prostate gland Signup and view all the answers