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What is the muscular layer of the heart ? myocardium What is the flow of blood from the digestive organs to the liver called ? portal circulation What is the heart's natural pacemaker ? sinoatrial node What is an abnormal rushing or blowing sound produced by valve damage ? heart murmur What type of heart failure occurs when the heart stops beating and instead twitches randomly ? ventricular fibrillation What is the contracting and pumping phase of the cardiac cycle ? systole

The dangerous condition that results when a person loses too much blood and his blood pressure falls to a critical low is shock About 55 % of the blood volume is a liquid called plasma Red blood cells are produced in the bone marrow The heart, the blood vessels, and the blood they contain compose what system cardiovascular hand sized organ, located in the abdominal cavity behind the stomach, that serves as a reservoir for red blood cells spleen tiny, disk-shaped cell fragment in the ...

The disease in which the gums detach from the teeth and the bones supporting the teeth may be destroyed is? periodontitis The tearing teeth that flank the teeth at the front of the mouth are? cuspids The roof of the mouth is the ? palate The exposed part of a tooth is the? crown The sticky digestive juice proceeds by glans in the mouth is? saliva The long tube of the digestive system, extending from the mouth to the anus is the? alimentary canal Another name for the mouth is the? o...

MATCHING Energy carrier of the cell ATP General term for any macronutrient characterized by insolubility in water Lipid Building block of a protein Amino acid Helps the intestines function properly Dietary fiber Nutrient that is the main source of energy for living things Carbohydrate Complex organic molecule used to build and maintain living cells Protein COMPLETIONA fatty acid that has every possible bond to hydrogen o

person received a serious injury that caused brain damage . As a result , his vision was impaired . Which lobe of the brain is most likely damaged occipital lobe What is the upper portion of the brain that coordinates thought , memory , and learned behaviors ? cerebrum What is the lower portion of the brain that helps control balance and coordination of muscle activity ? cerebellum What structure located above the brain stem routes signals to the appropriate areas of the brain ? thalamus ...

MULTIPLE CHOICE What term describes a nerve that contains both sensory and motor nerve fibers? Mixed nerve Which is the thick bundle of nerve fibers located within the vertebral column? Spinal cord What is the term for a short, branched extension of a neuron that receives impulses from other neurons and conducts them toward the cell body? Dendrite What type of neuron relays signals between other neurons? Interneuron SHORT ANSWER What is the principal organ of the nervous system? Brain

identify Trapezius Identify deltoid Identify pectoralis major

living things have traditionally been grouped into what 2 kingdoms? Plantae and Animalia a group of similar organisms that are all descended from a single group of originally created organisms is a(n): kind the scientific name of the loblolly pine is PINUS TAEDA. PINUS is this tree's: genus all nonflowering plants that produce seeds NOT COVERED BY THE WALLS OF AN OVARY gymnosperms because their cells DO NOT HAVE MEMBRANE-BOUND NUCLEI, bacteria are considered: prokaryotes which of the fo...

The section of a twig between nodes is the Internode The outer section of a woody stem which protects the stem and contains the phloem is called the Bark The older, inner wood of a stem that can no longer conduct sap but serves only as support for the stem Heartwood Alternating patterns in a woody stem consisting of distinct layers of spring wood and summer wood are called annual growth rings The bundles of xylem and phloem tubes in a herbaceous stem are called? Vascular The large bud at...

Abeka Biology quiz 4 latest update graded A+What is the sweet-tasting, watery liquid produced by the flowers of certain plants? Nectar The sperm and egg are referred to as ______ , or reproductive cells. gametes a______ fruit forms from a single flower that has several pistils Aggregate The fruits of the grass family are called Grain type of fruit consisting of an outer fleshy layer and an inner woody layer Drupe