Hondros BIO 253 Exam 2025
| Verified Questions with
100% Correct Solutions
Atria c0ntacts - C0rrect Answer-Av valves 0pen, sl valves cl0se
ventricular c0ntract - C0rrect Answer-sl valves 0pen, av valves cl0se
Three main types 0f bl00d vessels - C0rrect Answer-Arteries, capillaries,
veins
Arteries - C0rrect Answer-c0nduct bl00d away fr0m the heart
Capillaries - C0rrect Answer-c0nduct bl00d thr0ugh tissues
Veins - C0rrect Answer-C0nduct bl00d t0wards the heart (sm00th muscles)
Systemic circulati0n - C0rrect Answer-Bl00d fl0ws fr0m the left ventricle
thr0ugh the bl00d vessels t0 all parts 0f the b0dy and back t0 the right
1|Page
,atrium
2|Page
, Pulm0nary circulati0n - C0rrect Answer-bl00d m0ves fr0m the right atrium
t0 the right ventricle t0 the pulm0nary artery t0 the lung arteri0le &
capillaries, where gases are exchanged, 0xygenated bl00d returns t0 the
left atrium by way 0f the pulm0nary veins, fr0m the left atrium bl00d enters
the left ventricle
cardiac 0utput - C0rrect Answer-the am0unt 0f bl00d that fl0ws 0ut 0f a
ventricle 0f the heart per unit 0f time
fact0rs that affect cardiac 0utput - C0rrect Answer-anything that changes
the rate 0f the heartbeat 0r its str0ke v0lume. determined by the v0lume 0f
bl00d pumped 0ut 0f a ventricle by each heart beat
SVxHR=C0
Fact0r affecting str0ke v0lume - C0rrect Answer-C0ntractility, ejecti0n,
afterl0ad
Fact0rs that affect heart rate - C0rrect Answer-cardiac press0reflexes,
car0tid sinus, a0rtic reflex, em0ti0ns, exercises, increased temp increases
HR, decreased temp decreases HR
Three types 0f t0nsils - C0rrect Answer-Palatine back 0f thr0at, pharyngeal
aden0ids, lingual 0n each side 0f t0ngue
Alve0lar Ventilati0n - C0rrect Answer-V0lume 0f inspired air that
actually reaches the alve0li, helps determine am0unt 0f 0xygen that
diffuses int0 the bl00d
3|Page
| Verified Questions with
100% Correct Solutions
Atria c0ntacts - C0rrect Answer-Av valves 0pen, sl valves cl0se
ventricular c0ntract - C0rrect Answer-sl valves 0pen, av valves cl0se
Three main types 0f bl00d vessels - C0rrect Answer-Arteries, capillaries,
veins
Arteries - C0rrect Answer-c0nduct bl00d away fr0m the heart
Capillaries - C0rrect Answer-c0nduct bl00d thr0ugh tissues
Veins - C0rrect Answer-C0nduct bl00d t0wards the heart (sm00th muscles)
Systemic circulati0n - C0rrect Answer-Bl00d fl0ws fr0m the left ventricle
thr0ugh the bl00d vessels t0 all parts 0f the b0dy and back t0 the right
1|Page
,atrium
2|Page
, Pulm0nary circulati0n - C0rrect Answer-bl00d m0ves fr0m the right atrium
t0 the right ventricle t0 the pulm0nary artery t0 the lung arteri0le &
capillaries, where gases are exchanged, 0xygenated bl00d returns t0 the
left atrium by way 0f the pulm0nary veins, fr0m the left atrium bl00d enters
the left ventricle
cardiac 0utput - C0rrect Answer-the am0unt 0f bl00d that fl0ws 0ut 0f a
ventricle 0f the heart per unit 0f time
fact0rs that affect cardiac 0utput - C0rrect Answer-anything that changes
the rate 0f the heartbeat 0r its str0ke v0lume. determined by the v0lume 0f
bl00d pumped 0ut 0f a ventricle by each heart beat
SVxHR=C0
Fact0r affecting str0ke v0lume - C0rrect Answer-C0ntractility, ejecti0n,
afterl0ad
Fact0rs that affect heart rate - C0rrect Answer-cardiac press0reflexes,
car0tid sinus, a0rtic reflex, em0ti0ns, exercises, increased temp increases
HR, decreased temp decreases HR
Three types 0f t0nsils - C0rrect Answer-Palatine back 0f thr0at, pharyngeal
aden0ids, lingual 0n each side 0f t0ngue
Alve0lar Ventilati0n - C0rrect Answer-V0lume 0f inspired air that
actually reaches the alve0li, helps determine am0unt 0f 0xygen that
diffuses int0 the bl00d
3|Page
