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Mobolaji Tunwashe

A&P (Weeks 6-12 topics) flashcards

QuestionAnswer
What is the endocrine system responsible for? Secreting hormones into the bloodstream to regulate metabolism, growth, reproduction, and homeostasis.
Plasma Liquid portion of blood that carries nutrients, hormones, and wastes.
Platelets Cell fragments responsible for blood clotting.
Cardiac output formula CO = Heart Rate × Stroke Volume (amount of blood pumped per minute).
External respiration Gas exchange between alveoli and pulmonary capillaries.
Internal respiration Gas exchange between systemic blood and body tissues
Diffusion Movement of gases (O₂ & CO₂) from high to low concentration across alveolar membranes.
What is the primary pacemaker of the heart? SA node (sinoatrial node) — initiates electrical impulses that regulate heart rhythm.
Lymph Fluid similar to plasma that contains white blood cells and travels through lymph vessels.
Lymph nodes Small bean-shaped structures that filter lymph and trap pathogens.
Thymus Organ where T-lymphocytes mature; large in children, shrinks after puberty.
Spleen Filters blood, removes old RBCs, stores platelets, activates immune response.
Hemoglobin Protein in RBCs that binds and transports oxygen.
What is the function of red blood cells (RBCs)? Transport oxygen to tissues and remove carbon dioxide, using hemoglobin for gas exchange
What is the main function of the autonomic nervous system (ANS)? . Controls involuntary actions such as heart rate, breathing, digestion, and gland activity
Created by: Beejaypetite
 

 



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