Flashcard 8 - Order & Design

Front

What term refers to any ability of the body to resist invasion by a disease-causing organism?

Back

Immunity

Answer explanation

The term 'Immunity' refers to the body's ability to resist disease-causing organisms, making it the correct choice. 'Infection' describes the invasion itself, while 'Pathogen' and 'Antigen' relate to the organisms and immune response, respectively.

Front

In which organ do lymphocytes mature?

Back

Thymus

Answer explanation

Lymphocytes mature in the thymus, which is essential for developing T-cells. The liver, spleen, and kidneys do not play a direct role in the maturation of lymphocytes.

Front

What are the enlarged bundles of lymphatic tissue that filter lymph called?

Back

Lymph Nodes

Answer explanation

Lymph nodes are the enlarged bundles of lymphatic tissue that filter lymph. They play a crucial role in the immune system by trapping pathogens and facilitating their destruction.

Front

Which tubes transport urine from the kidneys to the bladder?

Back

Ureters

Answer explanation

The tubes that transport urine from the kidneys to the bladder are called ureters. Urethra is the tube that carries urine out of the body, while nephrons and tubules are parts of the kidney involved in urine formation.

Front

To what group of disease-fighting cells do phagocytes and lymphocytes belong?

Back

White blood cells

Answer explanation

Phagocytes and lymphocytes are both types of white blood cells, which play crucial roles in the immune response by fighting infections and diseases. Therefore, the correct answer is white blood cells.

Front

What is the largest lymphatic organ in the human body?

Back

Spleen

Answer explanation

The spleen is the largest lymphatic organ in the body, playing a crucial role in filtering blood and supporting the immune system. It is larger than the liver, thymus, and tonsils, making it the correct answer.

Front

In a biology class, Cotton learned that to aid in the fight against invaders, B cells produce __ molecules that bind to invading organisms to inactivate them and mark them for destruction.

Back

Antibodies

Answer explanation

B cells produce antibodies, which are molecules that specifically bind to invading organisms. This binding inactivates the invaders and marks them for destruction by other immune cells, making antibodies the correct answer.

Front

During a biology class, HaleyJoe learned about the body system that fights invading organisms and includes the lymphatic system. This system is the __ system.

Back

Immune

Answer explanation

The immune system is responsible for defending the body against invading organisms. It includes the lymphatic system, which plays a crucial role in immune responses, making 'Immune' the correct answer.

Front

During a biology class, Jaxon learned that body cells are surrounded by a clear fluid called __.

Back

Tissue fluid

Answer explanation

Body cells are surrounded by tissue fluid, which provides nutrients and removes waste. Plasma is the liquid component of blood, synovial fluid lubricates joints, and cellulose is a plant carbohydrate, making 'tissue fluid' the correct answer.

Front

During a biology class, Jude learned that wastes are removed from the body by the __ system.

Back

Excretory

Answer explanation

Wastes are primarily removed from the body by the excretory system, which includes organs like the kidneys and bladder. The digestive system processes food, while the muscular and cardiovascular systems serve different functions.