click below
click below
Normal Size Small Size show me how
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 |