Bio 255 Final Exam Questions and Answers

Bio 255 Final Exam Questions and Answers Cell junctions providing a channel allowing chemical substances to pass between cells are Gap junctions. Important peritoneal folds do NOT include the round ligament of the liver. Hormones are transported to their targets via Bloodstream. Where is fundus region of stomach Top near diaphragm. Which directly experiences both increases and decreases in pressure as the stapes presses on the oval window? Scala vestibuli. Which structure equalizes pressure in the middle ear? Auditory tube. Functions of the lymphatic system include Transport of excess tissue fluid to the blood vascular system. Which of the following would NOT be classified as a lymphatic structure? Pancreas. Synthesizes vitamin D Integumentary Site of blood cell formation Skeletal Allows facial expression Muscular Responds to stimuli by activating glands Nervous Maintains homeostasis by secreting hormones Endocrine Pumps blood through blood vessels Cardiovascular Drains intercellular spaces Lymphatic Allows gas exchange with enviroment Respiratory Absorbs nutrients consumed in diet Digestive Maintains homeostasis by excreting waste products of metabolism Urinary Works to make our species immortal, even if no individual lives forever Reproductive Calcitonin stimulates bone growth. Which cells would calcitonin target to do this? Osteoclasts With increasing age, growth hormone levels decline. What effect would this have on the body? Atrophy of muscles Sympathetic fibers leave the brain and spinal cord in the Thoracolumbar region, and the postganglionic fibers secrete norepinephrine. The mammary glands are modified: Sweat glands. The term peripheral nervous system refers to the Cranial and spinal nerves. What is the function of the gallbladder? Storage and concentration of bile. Which of the following is NOT a function of hepatocytes? a) Absorption of glucose b) Removal of toxins from the blood c) Production of digestive enzymes d) Secretion of albumin e) Secretion of bile c) production of digestive enzymes Characteristics of the mature sperm include A) the presence of two X chromosomes in approximately half the sperm B) the presence of Y chromosomes in approximately half the sperm C) the absence of an acrosome D) the absence of coiled mitochondria B) the presence of Y chromosomes in approximately half the sperm Synarthroses joints Provide little to no movement The corpus albicans is Is scar tissue remaining after ovulation when a pregnancy does not occur The passageway between the oral cavity and the pharynx, bordered by the palatoglossal and palatopharyngeal arches, is the Fauces. In skeletal muscle, each myofiber is surrounded by Endomysium. The major function of the sarcoplasmic reticulum in muscle contraction is to: Regulate intercellular calcium concentration. Which of the following surrounds the individual muscle cell? Endomysium. The sheet of connective tissue beneath skin around a muscle, providing a pathway for nerves and blood vessels is called the Fascia. The wave of electrical charge flowing through a neuron transmitting an impulse is called a(n) Action potential. An action potential is When a neuron sends an impulse down the axon towards the axon terminal. When we ingest large molecules such as lipids, carbohydrates, and proteins, they must be broken into smaller molecules. This series of reactions is called Chemical digestion. Oxygen is transported by red blood cells, it is carried by Attaching to the iron ion in heme. Which of the following is true about blood plasma? It is about 90% water. Which blood cells migrate to tissues to become macrophages? Monocytes