Cardiovascular and Respiratory System Review

What does it mean if you have heterozygous genes vs homozygous?

• Heterozygous means your alleles are dominant only, homozygous alleles are recessive only.

• Heterozygous means your alleles are both dominant and recessive, homozygous are recessive or dominant only.

How does a genotype compare to a phenotype

• A phenotype is the two alleles inherited from birth while genotype is physical characteristics

• A genotype is the first allele inherited, phenotype is the second allele inherited

• A genotype and phenotype have no differences

• A genotype is the two alleles inherited from birth while phenotype is physical characteristics

What is the function of the cardiovascular system?

• transports blood throughout the body to exchange substances to body cells

• To excrete waste from the body

• to secrete hormones into the body

• to exchange gasses, CO2 and O, in and out the body

What is the pericardium?

• innermost layer of heart

• outermost layer that encloses the heart

• the middle layer

• None of the above

What makes the "Lub Dub" sound?

• The medulla oblongata

• Your imagination

• The opening and closing of the AV valves

• Only the ventricular valve

What is the pacemaker of the heart?

• SA node

• SB node

• There is no pacemaker in the heart

• NA node

Correctly identify the upper and lower chambers of the heart

• Upper: left and right ventricle

  Lower: left and right atrium

• Upper: left ventricle and atrium

  Lower: right ventricle and atrium

• Upper: right ventricle and atrium

  Lower: left ventricle and atrium

• Upper: left and right atrium

  Lower: left and right ventricle

WBC's other name and function?

• SA node, carries impulse

• Leukocytes, Destroy pathogens

• Thrombocyte, causes coagulation to stop bleeding

• erythrocyte, carry oxygen

The other word for Platelet and its function?

• leukocytes, cause coagulation to stop bleeding

• thrombocytes, carry oxygen

• leukocytes, destroy pathogens

• Thrombocytes, cause coagulation to stop bleeding

Other word for RBC's and its function?

• thrombocyte, carry oxygen

• Erythrocytes, carry oxygen

• Leukocytes, destroy pathogens

• erythrocytes, causes coagulation to stop bleeding