Anatomical Structure of the heart and how it works- TC

The average heart beats about times a day

(a)  

• 100,000
• 20,000
• 50,000
• 200,000

Where is the heart located?

• inside the rib cage and to the right of the breastbone

• inside the rib cage and to the left of the breastbone

• inside the ribcage and in the middle of the breastbone

• somewhere in your stomach

The heart has 4 chambers and is divided into a right and left side by muscular walled called..​ (a)  

• septum
• liver
• heartplate
• esophagus

The 2 atria holds the blood that ​ (a)   away from the heart

• lowers
• delivers
• cycles
• circulates

The heart has four one-way valves, which ​ (a)   and ​ (b)   with each heartbeat.

• open
• close
• jump
• leap
• hide

The ​ (a)   and the ​ (b)   are located between the atria and allow blood flow from the atria to the ventricles.

• tricuspid valve
• mitral valve
• heart valve
• liver valve
• left valve
• right valve

Arteries carry

• to the lungs

• hormones

• to the excretory system

• oxygen-rich blood

• to the body tissues

• oxygen-poor blood

• to the digestive system

• waste products

• to the endocrine system

• nutrients

Since arteries keep pace with the heart, you can measure the heart

(a)   by counting the contractions of the arteries.

• rate
• pump
• skips

Which is the largest of all blood vessels?

• capillaries

• veins

• arteries

The exchange of ​ (a)   and ​ (b)   takes place through the capillary wall.

• oxygen
• carbon dioxide
• blood
• hemoglobin
• hydrogen
• peroxide