Systems Flashcards
(148 cards)
Epithelial Tissue
Protective tissues covering exposed regions of the body
Nervous tissues
Involved in conducting signals from nervous system
Connective Tissues
Structural tissues
Organs vs Organ Systems
Organ: heart Organ system: circulatory system
Negative feedback
Receptor signals control centre signals effector to bring body to homeostasis
Ecotherms
Cold-blooded. Obtain heat from environment
Endotherms
Hot-blooded. Generate own heat.
Function of gills
Diffuse oxygen from water into the blood of the animal
Respiration of simple animals occurs by _____
diffusion
Tracheae
Tubular chitinous system in grasshoppers where O2 enters through spiracles
Pathway of air as it enters the body
Pharynx larynx trachea, bronchi, bronchioles, alveolus, alveoli
Inspiration
Diaphragm contracts downward. External intercostal muscles contract upwards, increasing thoracic volume. Creates gradient
Medulla Oblongata
Controls respiration
Chemoreceptors
Monitor concentration of O2 and pH in our blood
Open circulatory systems contain ____
Hemolymph
Blood flow circuit starting at body
Body RA Tricuspid RV Pulmonary Valve Pulmonary Arteries Lungs Pulmonary Veins LA Mitral Valve LV Aorta Body
Process of contraction
SA node, AV node, Bundle of HIS, left and right bundle branches, Purkinje fibers, contraction
Systole
Contraction of ventricles. Semilunars are open. AV valves are closed
Diastole
Relaxation of ventricles. Semilunars closed. AV valves open
What causes movement of blood through arteries?
Hydrostatic pressure
Erythrocytes are ____
red blood cells
Leukocytes are ____
White blood cells
Platelets are?
Cell fragments that lack nuclei and are involved in clot formation
What is plasma?
Aqueous, non-cellular portion of blood