Unit 4 PBS Vocab Crossword

Alternative versions of a gene that produce phenotypic effects
Smallest structural unit of living matter Aorta: large arterial trunk that carries blood from the heart to be distributed by arteries through the body
Semilunar valve separating the aorta from the left ventricle that prevents blood from flowing back into the left ventricle
Any of the tubular branching muscular and elastic-walled vessels that carry blood from the heart through the body
An anatomical cavity or passage, a chamber of the heart that receives blood from the veins and forces it into a ventricle or ventricles
Largest vein in the human body and returns blood to the right atrium of the heart from bodily parts below the diaphragm
A vessel that returns blood to the heart
Electrical device for stimulating or steadying the heartbeat or reestablishing the rhythm of an arrested heart
Lipid that forms an essential component of animal cell membranes
Lipoprotein of blood plasma that is composed of a high proportion of protein with little triglyceride and cholesterol
All or part of the genetic constitution of an individual or group
All or part of the genetic constitution of an individual or group
Substance made up of fat (lipid) and protein. Its function is to carry cholesterol and fats (triglycerides) in the blood
Physical and physiological traits of an organism that are determined by its genetic makeup
A rare change in the DNA of a gene, ultimately creating genetic diversity
Vein that is the second largest vein in the human body and returns blood to the right atrium of the heart from the upper half of the body
A valve in the heart that guards the opening between the left atrium and the left ventricle
The pressure generated by the left ventricle during systole
Blood pressure that remains between heart contractions