NAS Final

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The male gonads have both sperm-producing and testosterone-producing functions and are called


The fibrous connective tissue enclosing each testis is the

tunica albuginea

The exocrine function of the male testes is

sperm production

The actual "sperm-forming factories" of the male reproductive system that empty sperm into the rete testes are called the

seminiferous tubules

Androgens such as testosterone are produced by the

bulbouretheral glands

The correct descending order of the male duct syste m (from the inside to outside) is:

ejaculatory duct, epididymis, ductus deferens, urethra

Maturing sperm gain their ability to swim while in the


Which is NOT a component of semen?

epididymal fluid

Thick, clear mucus that cleanses the urethra of acidic urine is produced by the

bulbourethral glands

Milky-colored fluid secreted from the prostate

activate sperm

Normal healthy semen has an approximate pH level of


Pregnancy is generally improbable with a sperm count:

under 20 million per milliliter

The final outcome of meiosis within both the testicles and the ovaries is:

four gametes

Each spermatid and ovum have:

23 chromosomes

Which of the following is NOT one of the secondary sex characteristics typical of males:

increased sex drive

Fertilization usually occurs in the:

uterine (fallopian) tubes

The process by which a mature egg is ejected from the ovary is called:


The journey of the oocyte through the uterine tubes to the uterus following ovulation normally takes:

3-4 days

The superior rounded region of the uterus above the entrance of the uterine tubes is called the:


The narrow outlet of the uterus that projects into the vagina is called the:


the external female structure that corresponds to the male penis is the:


The inner mucosal layer of the uterus that is sloughed off approximately every 28 days is called the:


The hormone responsible for ovulation is:

lutenizing hormone

Days 15-28 of the menstrual cycle are known as:

the secretory phase

Which one of the following is NOT true of the proliferative state of the menstrual cycle:

the endometrium becomes thin and shiny in appearance

Which one of the following is NOT one of the secondary sex characteristics in young women:

decreased fat deposits beneath the skin

The corpus luteum is a special glandular structure of the ovaries that primarily produces:


The mammary glands are:

modified sweat glands in both males and females

The clusters of specific glands that produce milk when a woman is lactating are called

alveolar glands

The tiny ball of 16 cells found freely floating in the uterine cavity is called a:


Parturition is another term for:


labor is initiated by prostaglandins and


The stage of labor that involves the delivery of the infant is the:

expulsion stage

The first menstrual period, which usually occurs at approximately age 13, is called:


Menopause, which ends childbirth ability, is considered to have occurred when a woman:

has gone a year without menstruation

Which one of the following is NOT one of the functions of the kidneys:

produce hormones that assist in digestion

Which of the following is NOT an organ found in the urinary system:


Which one of the following terms describes the location of the kidneys:


The kidneys are aided in the excretion of fluids by the

lungs and skin

The triangular regions of the kidneys that striped in appearance and separated by the renal columns are the:

renal pyramids

As venous blood is drained from the kidney, which path does it follow:

cortical radiate veins, arcuate veins, interlobar veins,renal vein

The enlarged, cup-shaped closed end of the renal tubule that completely surrounds the glomerulus is called the:

Bowman's capsule

Starting from the glomerular capsule, the correct order of the renal tubule regions is:

proximal convoluted tubule, loop of Henle, distal convoluted tubule

The portion of the renal tubule that completely surrounds the glomerulus is the:

glomerular (Bowman's) capsule

Most nephrons are located within the renal:


Of the capillary beds associated with each nephron, the one that is both fed and drained by arterioles is the:


The peritubular capillaries arise from the ________, which drains the glomerulus.

efferent arteriole

The nonselective, passive process performed by the glomerulus that forms blood plasma without blood proteins is called:


Uric acid, a nitrogenous waste product, results fromt eh metabolism of:

nucleic acids

Which one of the following represents the correct order through which food passes in the alimentary canal:

mouth, pharynx, esophagus, stomach, small intestine, large intestine

The fold of mucous membrane that secures the tongue to the floor of the mouth and limits its posterior movements is called the

lingula frenulum

The submucosal and myenteric nerve plexuses that help regulate the mobility and secretory activity of the GI tract organs are both part of the:

autonomic nervous system

The release of food from the stomach into the small intestine is regulated by the:

pyloric sphincter (valve)

The small intestine extends from the:

pyloric sphincter to the ileocecal valve

Which one of the following is the middle section of the small intestine:


Enzymes and bile are carried by the pancreatic duct and bile duct into the:


The primary function of the small intestine is:

absorption of nutrients

Which one of the following is NOT a subdivision of the large intestine:


The organ responsible for drying out indigestible food residue through water absorption and the elimination of feces is the:

large intestine

The accessory digestive organ that produces enzymes that break down all food groups in the:


The conducting passageways of the respiratory system include all of the following structures EXCEPT:


The respiratory conducting passageways perform all of the following except:

warm incoming air

Which one of the following terms does not apply to the nose:


What is the role of mucus in the nasal cavity:

trap incoming bacteria and other foreign debris

The nasal cavity is separated from the oral cavity by:

both the hard and soft palate

Which one of the following bones does NOT contain paranasal sinuses:


Which one of the following is NOT a function of the paranasal sinuses:

they are olfactory receptors for smell

Tonsils that lie at the base of the tongue are called:

lingual tonsils

Following the removal of the larynx, a person would be unable to:


The opening between the vocal cords is called the:


The flap of elastic cartilage that protects food from entering the larynx when swallowing is the :


When oxygen enters the respiratory system, what is the next structure to which it travels immediately upon leaving the trachea:

main (primary) bronchi

The walls of the alveoli are composed largely of:

simple squamous epithelium

Exchange of both oxygen and carbon dioxide through the respiratory membrane occurs by:

simple diffusion

Air moving in and out of the lungs is called:

pulmonary ventilation

The gas exchange that occurs between blood and tissue cells at systemic capillaries is called:

internal respiration

Most carbon dioxide is transported within blood plasma as:

bicarbonate ion

Oxygen binds with hemoglobin in the blood to form:


The most important chemical stimuli leading to increased rate and depth of breathing is:

increased carbon dioxide in the blood

The molecule that prevents lung collapse by lowering the surface tension of the water film lining each alveolar sac is called:


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