Question

· Heart muscle receives its oxygen and nutrient supply from

o atria
o ventricles
o aorta
o pulmonary veins
o coronary arteries
· The "cushion" between bones in joints is
o tendons
o cartilage
o ligaments
o fibroblasts
· Muscle spindles
o help muscle fibers coil
o pull bonds across joints
o sense contraction levels
o 3
· Valves in the circulatory system prevent
o unnecessary entry of blood
o backwards flow of blood
o too much downstream pressure
· A double circulatory system is important for
o large animals
o fast metabolism
o an emergency backup
· The spleen
o filters blood
o contains a reserve of red blood cells
o forms white blood cells
· Cardiac muscle is connected by
o tendons
o intercalated disks
o connective tissue
o ligaments
o 2
· The respiratory surface must exchange ____ with the environment
o oxygen and CO2
o nutrients and waste
o water and plasma
· Nervous system input increases the ______ of heartbeat
o strength
o rate
o duration
o all of these
· Fluid within tissues is
o lymph
o plasma
o interstitial

Answer 1

Hello, HanieManuelym!

Heart muscle receives its oxygen and nutrient supply from pulmonary veins.
The "cushion" between bones in joints is cartilage.
Muscle spindles sense contraction levels.
Valves in the circulatory system prevent backwards flow of blood.
A double circulatory system is important for fast metabolism.
The spleen filters blood.
Cardiac muscle is connected by connective tissue.
The respiratory surface must exchange oxygen and CO2 with the environment.
Nervous system input increases the strength, rate, and duration of heartbeat
Fluid within tissues is interstitial.

Hope this helps :)