Answer:
Option). the ability to remember the antigen it encounters
Explanation:
The adaptive or acquired immunity is a type of immunity, which develops by the exposure of pathogens during lifetime. Four features of adaptive immunity includes specificity, diversity, memory, and ability to differentiate between self and non-self.
Cells of adaptive immunity (B cells and T cells) are specific for pathogens. Once the antigens or their components are recognized by pathogens, these cells produce effector cells and memory cells.
These are the memory cells that remember the antigens and provide a rapid and more efficient response during subsequent encounters of those antigens.
Thus, the correct answer is first option.
Body systems include:
Circulatory-
INCLUDES: Heart, blood vessels, blood lymph nodes and vessels, lymph
FUNCTIONS: Transports nutrients, wastes, hormones, and gases
Digestive-
INCLUDES: Mouth, throat, esophagus, stomach, liver, pancreas, and small and large intestines.
FUNCTIONS: Extracts and absorbs nutrients from food; removes wastes; maintains water and chemical balances.
Endocrine-
INCLUDES: Hypothalamus, pituitary, pancreas, and many other endocrine glands.
FUNCTIONS: Regulates body temperature, metabolism, development, and reproduction; maintains homeostasis; regulates concentration of body fluids.
Excretory-
INCLUDES: Kidneys, urinary bladder, ureters, urethra, skin, lungs
FUNCTIONS: Removes wastes from blood; regulates conccentration of body fluids.
Immune-
INCLUDES: White blood cells, lymph nodes and vessels, skin.
FUNCTIONS: Defends against pathogens and disease.
Integumentary -
INCLUDES: Skin, nails, hair
FUNCTIONS: Protects against injury, infection, and fluid loss; helps regulate body temperature.
Muscular-
INCLUDES: Skeletal, smooth, and cardiac muscle tissues.
FUNCTIONS: Moves limbs and trunk; moves substances through body; provides structure and support.
Nervous-
INCLUDES: Brain, spinal cord, nerves, sense organs.
FUNCTIONS: Regulates behavior; maintains homeostasis; regulates other organ systems; controls sensory and motor fuctions.
Reproductive-
INCLUDES: Testes, penis(in males); Ovaries, uterus, breasts(in females)
FUNCTIONS: Produces gametes and offspring.
Repertory-
INCLUDES: Lungs, nose, mouth, trachea.
FUNCTIONS: Moves air into and out of lungs; controls gas exchange between blood and lungs.
Skeletal-
INCLUDES: Bones and joints.
FUNCTIONS: Protects and supports the body and organs; interacts with skeletal muscles, producs red blood cells, white blood cells, and platelets
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Phagocytosis and the inflammatory response. Macrophages are a cornerstone of the innate immune system. ... Recent work indicates that Toll-like receptors play a key role in reading a "bar code" on invading microorganisms and in eliciting a specific immune respone.
Areas where cold and warm currents meet have a tendency to have regular foggy situations, as the overlying warm and cold air come in contact with each other. They also have a tendency to have high biological productivity, because plankton growth is embolden by the mixing of warm and cold currents. Some of the world's most productive fishing grounds are situated where warm and cold currents meet. For example, where Labrador Current (cold) and Gulf Stream (warm) meet, a dense fog is there and it is one of the richest fishing grounds of the world.
