Human Body and the Cardio Vascular System
What organ pumps blood throughout the body?
Heart
What clear fluid is transported through lymphatic vessels?
Lymph
What gas do we breathe in that is essential for life?
Oxygen
What organs filter waste from the blood to produce urine?
Kidneys
What are segments of DNA that code for traits called?
Genes
Which type of tissue covers the surface of the body and lines organs?
Epithelial tissue
What small, bean-shaped structures filter lymph and trap pathogens?
Lymph nodes
What muscle contracts to help us breathe in and out?
The diaphragm
What is the tube that carries urine from the kidney to the bladder?
Ureter
What are the two versions of a gene called?
Alleles
What term describes the body’s ability to maintain a stable internal environment?
Homeostasis
What type of white blood cell produces antibodies?
B Cells
What tiny air sacs in the lungs are where gas exchange occurs?
Alveoli
What is the functional unit of the kidney called?
Nephron
What term describes an organism with two identical alleles for a trait?
Homozygous
What part of the heart receives oxygen-rich blood from the lungs?
The left atrium
What is the body’s first line of defense against infection?
Skin and mucous membranes
What structure connects the throat (pharynx) to the lungs?
The trachea
What is the main waste product excreted in urine?
What molecule carries the genetic code inside cells?
DNA
What type of blood vessel carries blood away from the heart?
Arteries
What type of immunity develops after receiving a vaccine?
Active immunity
What is the main waste gas removed by the respiratory system?
Carbon Dioxide
What process in the kidneys allows useful substances like water and glucose to return to the bloodstream after filtration?
Reabsorption
If a person inherits one dominant allele and one recessive allele for a trait, which form of the trait will they show?
The dominant trait