Answer:
d. Epithelial tissues are nourished by blood vessels in adjacent tissues, thus diffusion is limited to thin tissues.
Explanation:
Epithelial tissues have tightly packed cells and have no space for blood vessels to be present between adjacent epithelial cells. The cells of the epithelial tissues get nutrients from the blood vessels of neighboring connective tissues.
Since the exchange of nutrients between the cells of the epithelial and connective tissues occurs through diffusion, epithelial tissues are only one to few cells layers thick to allow nutrient supply to all of its cells.
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➷ The endocrine system is an organ system that works to produce and secrete hormones. It works by producing and secreting hormones that serve many purposes in the human body. For example, the secretion of insulin helps to regulate the level of glucose in the blood.
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Answer:
Net filtration would decrease.
Explanation:
Net filtration pressure may be defined as the pressure present at the glomerulus. The net filtration pressure is the outward pressure minus the inward pressure existing at the kidney.
The net filtration pressure is affected by the osmotic pressure as well. The osmotic pressure always opposed the filtration. This might result in the increase in osmotic pressure. This will ultimately decrease the net filtration pressure as both oppose each other.
Thus, the correct answer is option (b).
Invasion and multiplication of the bacteria in body tissues result in local cellular injury due to
1 competitive metabolism
2. Toxin- which is a poisonous substance produced within living cells or organism
3. intra cellular replication
4. antigen-antibody interaction- which is a specific chemical interaction between antibodies produced by B cell of white blood cells and antigens during immune reaction
Answer:
The pituitary gland also produces hormones for organs in the body, as well. It creates:
Oxytocin for the uterus and mammary glands to stimulate contractions that aid in birth and milk production
Vasopressin, an antidiuretic hormone, for the kidneys
Beta-melanocyte-stimulating hormone that darkens the skin
Endorphins for the brain and immune system to help inhibit pain sensations and regulate the immune system
Growth hormones for muscles and bones
Enkephalins that help inhibit pain sensations in the brain
Prolactin, which stimulates milk production in the mammary glands
Explanation:
