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Cna 2016 chapter 7
Question | Answer |
---|---|
The basic unit of body structure is the | Cell |
Each cell has the same | Basic structure |
To live and function cells need | Food, water, oxygen |
Which part of the cell directs the cell's activities? | Nucleus |
Where is the nucleus located? | At the center of the cell |
How many chromosomes are in each cell | 46 |
Which controls inherited traits? | Gene |
The process of cell division is called | Mitosis |
Groups of cell with similar functions are | Tissue |
Allows the body to move by stretching and contracting | Muscle tissue |
Groups of tissues with the same function form | Organs |
Systems are | Groups of organs that work together to perform special functions. |
is the largest body system | Integumentary |
is the outer layer of skin | Epidermis |
gives the skin its color | Pigments. |
Where are blood vessels, nerves, sweat and oil glands, and hair roots found? | Dermis |
helps the body regulate temperature. | Sweat glands |
helps keep the hair and skin soft and shiny. | Oil glands |
What are the functions of the skin? | Prevents excessive amounts of water from leaving the body. |
The musculoskeletal system does what? | Allows the body to move. |
bones bear the body's weight. | Long |
Which part of the bone contains blood vessels that supply bone cells with oxygen? | Periosteum |
Blood cells are manufactured in the | bone marrow. |
The point at which two or more bones meet is | joints. |
Bones are held together at a joint by | ligaments. |
allow movement | Joints |
The hips and shoulders are_______ joints | ball and socket |
What are voluntary muscles? | arms and legs muscles |
What are fuctions of the muscles? | Maintain posture. |
Muscles are connected to bone by | tendons. |
The connective tissue at the end of long bones is called | Cartilage |
What are the main parts of the brain? | Brainstem. |
Thoughts and intellegence are centered in the | Cerebrum |
Damage to the cerebral cortex can affect | Reasoning |
Regulates and coordinates body movements | Cerebellum |
The brainstem conatains what structures | Pons |
Heart rate, breathing, and blood vessel size are controlled by the | Medulla |
Swallowing, coughing, and vomiting are controlled by the | Medulla |
Pathways that conduct messages to and from the brain are contained in the | Spinal cord |
The spinal cord is about____ inches long. | 18 |
The cerebrospinal fluid protects the | brain and spinal cord. |
The peripheral nervous system consist of | cranial nerves and spinal nerves. |
The sympathetic nervous system_____ body fuctions. | speeds up |
Which system is stimulated when you are excited, exercising, or scared? | The sympathetic nervous system |
The white of the eye is the | Sclera |
The opening in the middle of the iris is the | Pupil |
In bright light, pupil size | decreases |
Nerve fibers for vision are found in the | retina |
Light enters the eye through the | cornea |
Besides hearing another ear fuction is | balance |
The waxy substance secreated by glands in the ear is | Cereumen |
Which seperates the external ear and middle ear? | tympanic membrane |
The tympanic membrane is also called the | ear drum |
carries messages to the brain. | Acoustic nerve |
The circulatory system does what? | Carries food and water to the cells |
The circulatory system pumps | Blood |
The liquid part of the blood is | plasma |
gives red blood their color. | Hemoglobin |
Red blood are bright red when they are saturated with | oxygen. |
Red blood cell, white blood cells, and platelets are produced by | bone marrow. |
White blood cells | Protect the body against infections. |
is the muscular part of the heart | Myocardium |
Which heart chamber receives blood from body tissues? | Right atrium. |
Which heart chamber pumps blood to all parts of the body? | Left ventricle. |
is the working phase of the heart. | Systole |
carries blood away from the heart. | Arteries |
is the largest artery. | Aorta |
Which vessels are involved in passing food and oxygen to the cells? | Capillaries. |
Which vessels carry blood back to the heart | Veins |
Which carries blood to the legs and trunk back to the heart? | Inferior vena cava |
The process of supplying the cells with oxygen and removing carbon dioxide from them is | respiration. |
Inspiration involves | breathing in. |
Normally air enters the body through the | nose. |
Another word for trachea is | windpipe. |
Oxygen and carbon dioxide are exchanged | between the aveoli and capillaries. |
seperates the lungs from the abdominal cavity | Diaphragm |
After passing the trachea air enters the | right bronchus and left bronchus. |
Each lung is covered by a sac called the | pleura. |
What are the three parts to the framework that protects the lungs? | Vertebrae |
The process of breaking food down physically and chemically for absorption and use by the body is | disgestion. |
The digestive system | removes solid waste from the body. |
What are the parts of the digestive system? | Mouth,anus and colon. |
The duodenum is a part of the | small intestine. |
The colon is a part of the | large intestine. |
Digestion begins in the | mouth. |
Saliva is secreated in the salivary glands in the | mouth. |
What is the function of saliva? | Moistens food particles for easy swallowing. |
Which secreation starts digestion? | Saliva. |
During swallowing the tongue pushes food into the | pharynx. |
Food is moved through the esophagus by | peristalsis. |
The stomach is located in the_____ of the abdominal cavity. | upper left part |
What is the stomach's function in digestion? | Stirs and churns food to break it up into small particles. |
Chyme is produced in the | stomach. |
Bile is a greenish liquid produced by the | liver. |
Bile is stored in the | gallbladder. |
Chyme moves through the small and large intestines by | peristalsis. |
Most food absorption occurs in the | small intestine. |
The large intestine is also called the | colon. |
Most of the water is absorbed by chyme in the | large intestine. |
After water is absorbed from chyme, the remaining semi-solid material is called | feces. |
The waste product of digestion is pass out of rhe body through the | anus. |
The urinary system | Removes waste products from the blood . |
The_____ system maintains the bodys water balance. | Urinary |
The_____ system includes the urethra. | Urinary |
Urine is formed in the | nephrons. |
Urine is stored in the | bladder. |
The opening at the end of the urethra is the | meatus. |
The female sex glands are | ovaries. |
Sperm cells are formed in the | testes. |
The male hormone is | testosterone. |
What fluid carries sperm? | Semen. |
Sperm cells leave the body through | urethra. |
The penis contains the | urethra. |
Which part of the male reproductive system enters the female vagina? | Penis. |
Female sex cells are called | ova. |
During the reproductive years, female sex cell are released | monthly. |
The process of releasing a female sex cell is | ovulation. |
The female sex gland secreate | estrogen and progesterone. |
Where does a fertilized sex cell grow during pregnancy? | Uterus. |
Which part of the female reproductive system opens to the outside of the body? | Vagina. |
External genitalia in the female are the | vulva. |
The labia majora and the labia minora | are folds of tissue on each side of the vagina |
Menstruation normally occurs | every 28 days. |
During menstruation | the endometrium is discharged from the body. |
Mentrual flow usually last | 3-7 days. |
Menstual flow is | bloody. |
The master gland of the body is the | pituitary gland. |
Growth hormone is secreted by the____ gland | pituitary. |
Which hormone regulates metabolism | thyroid. |
Too little thyroid hormone results in | slowed body processes. |
The adrenal glands are located | on top of each kidney. |
The adrenal glands secrete | epinephrine and norepinephrine. |
______ increases heart rate, blood pressure and energy. | Epinephrine and norepinephrine |
The pancreas secretes | insulin. |
Which hormone controls the amount of sugar in the blood? | Insulin. |
The_____ system functions to protect the body against disease and infection. | immune |
A person has protection from a disease or condition. This is | immunity. |
An abnormal or unwanted substance is | an antigen. |
______ produces antibodies. | Lymphocytes |