Bios255 lab - Study guides, Class notes & Summaries

Exam 1: BIOS255 / BIOS 255 (Latest Update 2024 / 2025) Anatomy & Physiology III with Lab | Test Review Study Guide | 100% Correct | Grade A - Chamberlain Question: cardiac pacemaker cells Answer: SA nodes Question: SA node Answer: Sodium, potassium and calcium Question: Slow influx of Na+ Answer: Results of this depolarization Question: Electrical conduction system Answer: SA node, AV node, Bundle of His, Purkinje fibers Question: P wave Answer:...

Comprehensive Exam: BIOS255 / BIOS 255 (Latest Update 2024 / 2025) Anatomy & Physiology III with Lab | Study Guide Review Questions | 100% Correct | Grade A - Chamberlain Question: Which of the following statements best describes the meaning of a cross-bridge in the process of a muscle contraction? Answer: Myosin head attaching to the myosin binding sites of actin Question: During the ____________ phase of an action potential, Na+ is entering the cell, causing the membrane poten...

Exam 1: BIOS255 / BIOS 255 (Latest Update 2024 / 2025) Anatomy & Physiology III with Lab | Review Test Questions & Answers | 100% Correct | Grade A - Chamberlain Question: depolarization is due to Answer: calcium and sodium Question: repolarization is due to Answer: potassium Question: closing of the valves Answer: heart sound Question: 1st heart sound Answer: AV valves closing (lub) Question: 2nd heart sound Answer: Semilunar valves closing (dub) ...

Exam 2: BIOS255 / BIOS 255 (Latest Update 2024 / 2025) Anatomy & Physiology III with Lab | Test Review | 100% Correct | Grade A - Chamberlain Question: Tonsils Answer: Found in pharynx and oral cavity - helps to trap inhaled or ingested foreign substances Question: pharyngeal tonsil Answer: Wall of nasopharynx Question: palatine tonsils Answer: Pair at posterior oral cavity, tonsillitis Question: lingual tonsils Answer: pair at root of tongue Question...

Exam 3: BIOS255 / BIOS 255 (Latest Update 2024 / 2025) Anatomy & Physiology III with Lab | Exam Weeks 5 – 7 Review | 100% Correct | Grade A - Chamberlain Question: External respiration Answer: exchange of gases between alveolar air and blood in pulmonary capillaries Question: Simple diffusion Answer: the reason o2 and co2 move across alveolar membrane Question: simple diffusion Answer: movement of a solute from an area of high concentration to an area of low con...

Exam 1: BIOS255 / BIOS 255 (Latest Update 2024 / 2025) Anatomy & Physiology III with Lab | Exam Study Guide | 100% Correct | Grade A - Chamberlain Question: What is the pericardium? Answer: double-walled sac that encloses the heart Question: What are the layers of the heart? Answer: Epicardium Myocardium Endocardium Question: What layer is the epicardium? Answer: outer layer Question: What layer is the myocardium? Answer: The middle layer which is a muscle l...

Exam 2: BIOS255 / BIOS 255 (Latest Update 2024 / 2025) Anatomy & Physiology III with Lab | Exam Questions & Verified Answers | 100% Correct | Grade A - Chamberlain Question: principal variables that physiologically determine blood pressure Answer: resistance to flow blood volume cardiac output Question: cardiac output Answer: the amount of blood pumped out of the left ventricle per minute so it will directly influence blood pressure in the blood vessels. Question: local ...

Exam 3: BIOS255 / BIOS 255 (Latest Update 2024 / 2025) Anatomy & Physiology III with Lab | Exam Study Guide Questions & Answers | 100% Correct | Grade A - Chamberlain Question: Components of the Respiratory System Answer: Conducting zone respiratory zone upper respiratory tract lower respiratory tract Question: Principal organs Answer: Nose, pharynx, larynx, trachea, lungs (and bronchi, bronchioles, alveoli within lungs) Question: Conducting zone Answer: no gas exchange-...

Exam 3: BIOS255 / BIOS 255 (Latest Update 2024 / 2025) Anatomy & Physiology III with Lab | Exam Review Questions & Answers | 100% Correct | Grade A - Chamberlain Question: respiratory membrane Answer: thin barrier between the alveolar air and blood Question: The respiratory membrane consists of three layers: Answer: squamous alveolar cells endothelial cells of blood capillary their shared basement membrane Question: Describe the layers of the pleura membrane and the l...

Exam 3: BIOS255 / BIOS 255 (Latest Update 2024 / 2025) Anatomy & Physiology III with Lab | Exam Questions & Verified Answers | 100% Correct | Grade A - Chamberlain Question: in HIV/AIDS, what cells are attacked? Answer: CD4 cells Question: hypersensitivity reactions Answer: Type I- exposures to allergens and the IgE antibodies action. Question: neutrophil Answer: phagocytic cell that engulf and destroy pathogens Question: eosinophil Answer: guard against par...