Q: Answer the following question given this paragraph: Mucosal Immune System The innate and adaptive immune responses compose the systemic immune system (affecting the whole body), which is distinct from the mucosal immune system. Mucosa associated lymphoid tissue (MALT) is a crucial component of a functional immune system because mucosal surfaces, such as the nasal passages, are the first tissues onto which inhaled or ingested pathogens are deposited. The mucosal tissue includes the mouth, pharynx, and esophagus, and the gastrointestinal, respiratory, and urogenital tracts. Mucosal immunity is formed by MALT, which functions independently of the systemic immune system, and which has its own innate and adaptive components. MALT is a collection of lymphatic tissue that combines with epithelial tissue lining the mucosa throughout the body. This tissue functions as the immune barrier and response in areas of the body with direct contact to the external environment. The systemic and mucosal immune systems use many of the same cell types. Foreign particles that make their way to MALT are taken up by absorptive epithelial cells and delivered to APCs located directly below the mucosal tissue. APCs of the mucosal immune system are primarily dendritic cells, with B cells and macrophages. Q: What is a collection of lymphatic tissue that combines with epithelial tissue lining the mucosa throughout the body? Choices: - unassociated lymphoid tissue - spheroids associated lymphoid tissue ( malt ) - cottony associated lymphoid tissue ( malt ) - mucosa associated lymphoid tissue (malt) A:
A: mucosa associated lymphoid tissue (malt)

Q: Answer the following question given this paragraph: 35.3 | The Central Nervous System By the end of this section, you will be able to: Identify the spinal cord, cerebral lobes, and other brain areas on a diagram of the brain Describe the basic functions of the spinal cord, cerebral lobes, and other brain areas The central nervous system (CNS) is made up of the brain, a part of which is shown in Figure 35.19 and spinal cord and is covered with three layers of protective coverings called meninges (from the Greek word for membrane). The outermost layer is the dura mater (Latin for "hard mother"). As the Latin suggests, the primary function for this thick layer is to protect the brain and spinal cord. The dura mater also contains vein-like structures that carry blood from the brain back to the heart. The middle layer is the web-like arachnoid mater. The last layer is the pia mater (Latin for "soft mother"), which directly contacts and covers the brain and spinal cord like plastic wrap. The space between the arachnoid and pia maters is filled with cerebrospinal fluid (CSF). CSF is produced by a tissue called choroid plexus in fluid-filled compartments in the CNS called ventricles. The brain floats in CSF, which acts as a cushion and shock absorber and makes the brain neutrally buoyant. CSF also functions to circulate chemical substances throughout the brain and into the spinal cord. Q: The three layers of protective coverings of the spinal cord is called what? Choices: - dermis - tendons - muscles - meninges A:
A: meninges

Q: Answer the following question given this paragraph: Lastly, keep in mind the small size of bacteria. Together, all the bacteria in your gut may weight just about 2 pounds. Q: How much can the bacteria in your gut weigh? Choices: - 2.2 pounds - 2.15 pounds - 2 kilograms - 2 pounds A:
A: 2 pounds

Q: Answer the following question given this paragraph: A mycorrhiza (Greek for "fungus roots") is a symbiotic association between a fungus and the roots of a plant. In a mycorrhizal association, the fungus may colonize the roots of a host plant by either growing directly into the root cells, or by growing around the root cells. This association provides the fungus with relatively constant and direct access to glucose, which the plant produces by photosynthesis. The mycelia of the fungi increase the surface area of the plant's root system. The larger surface area improves water and mineral nutrient absorption from the soil. Q: A mycorrhiza refers to what kind of relationship between a fungus and the roots of a plant? Choices: - predator-prey - semantic - familial - symbiotic A:
A: symbiotic