Science Questions Flashcards
What is the location of the trachea in relation to the esophagus?
Anterior
The trachea is anterior to the esophagus.
The epiglottis covers the trachea when we swallow.
Which of the following substances is not a product of respiration?
*Carbon dioxide
*Water
*Oxygen
*ATP
In respiration air is
inhaled (oxygen)
Inhaled oxygen produces
ATP
Inhaled air exhales
Carbon dioxide
What is the function of ribosomes in the cell?
Ribosomes aid in protein synthesis
Oblique plane
goes through the body at any angle other than horizontal or vertical.
Which of the following components of the human integumentary system is the deepest?
Hypodermis.
It is the deepest part of the integumentary system.
Layers of skin refer to epidermis; Stratum corneum, stratum lucideum, stratum granulosum, stratum spinosum, stratum basale.
of the following, blood vessels containing the least-oxygenated blood is the:
*Aorta- carries oxygenated blood
*Vena cava- carries blood into the heart
*Pulmonary artery- carries oxygen depleted blood from the heart to the lung
*Femoral vein- carries deoxygenated blood towards vena cava
How many types of tissues are there in the human body?
4
*Epithelial
*Connective
*Muscle
*Nerve
Epithelial tissue function
lines the internal and external surfaces of the body. Consist of squamous, cuboidal, and columnar cells.
Can expand and contract as in the bladder.
Connective tissue function
provides the structure of the body, as well as the links between various body parts.
Examples include: tendons, ligaments, cartilage, and bone.
Muscle tissue function
composed of tiny fibers, which contract and move with the skeleton.
Three types of muscle tissue: smooth, cardiac, and skeletal.
Nerve tissue function
makes up the nervous system; composed of nerve cells, nerve fibers, neuroglia and dendrites.
Which blood vessel carries oxygenated blood back to the heart
Pulmonary vein
What type of molecules are enzymes
Protein molecules serve as catalysts for certain biological reactions
how does DNA and RNA function together as part of the human genome?
RNA carries genetic information from DNA to the cell cytoplasm.
What is the difference between DNA and RNA
DNAs fourth base is thymine and RNAs fourth base is uracil.
Large intestines main functions
reabsorption of
*water
*vitamin K
*biotin
*electrolytes
What are the segments of the small intestine
*duodenum
*jejunum
*ileum
Function of the duodenum
first section of the small intestine, and it receives chyme from the stomach, further digesting it with the help of enzymes released by the gallbladder
function of the jejunum
middle portion of the small intestine. absorbs amino acids, fatty acids, and sugars
function of lymph
removes bacteria from tissues, replaces lymphocytes in the blood, and moves fat away from the small intestine.
