A&P Lab Review

What structure is the functional unit of contraction in a skeletal muscle fiber?

The sarcomere

Identify the cleavage/blastocyst structure labeled "C".

advanced morula

What genetic disorder depicted in this image results in a lack of skin pigmentation which increases the chance of developing skin cancer?

albinism

Each codon of mRNA (hence each triplet in DNA) codes for one

amino acid

Male and female pronuclei fuse in a process called

amphimixis

Which structure of the intervertebral disc attaches to the bodies of adjacent vertebra?

anulus fibrosus

Identify the connective tissue proper cellular component labeled "F".

fibroblast

The rotator cuff is a term used to describe the group of muscles and tendons that stabilize and reinforce the __________.

glenohumeral joint

Identify the thoracic cage structure labeled "A".

jugular notch

Identify the compact bone structure labeled "D".

lacunae

What molecule is the final electron acceptor in the ETS?

molecular oxygen

Cells located in each seminiferous tubule which function to provide a microenvironment that supports spermatogenesis are called

nurse cells

Identify the special joint movement labeled "E".

opposition

Identify the major skeletal muscle labeled "F".

pectoralis major

The ball and socket joint in the hip is similar to the ball and socket joint of the shoulder but is designed more for __________ than ___________.

power; precision

An arterial blood gas was performed on a patient and the following results were obtained: pH = 7.30 CO2 = 47 mm Hg HCO3- = 25 mEq/L What type of acid-base imbalance would be indicative of these values?

respiratory acidosis

Identify the skeletal muscle fiber structure labeled "G".

sarcoplasmic reticulum

Describe the body pose of someone who is in the anatomical position.

standing erect, hands at sides, palms pointed forward, toes pointing forward

Identify the type of joint labeled "F".

symphysis

Ovarian cancer is a cancer of the female gonads. Therefore, ovarian cancer is to women as __________ is to men.

testicular cancer

A torn lateral collateral ligament destabilizes the connection between which of the following bones?

the femur and the fibula

Why do skeletal muscle cells contain high numbers of mitochondria?

to supply the ATP needed for skeletal muscle function

Identify the major skeletal muscle labeled "A".

trapezius

Identify the structure of the adult human skull labeled "I".

zygomatic bone

Identify the male reproductive structure labeled "B".

ductus deferens

The cross-bridge cycle is a series of molecular events that occur after excitation of the sarcolemma. What is a cross bridge?

A myosin head bound to actin

Trisomy 21 is the most common viable chromosomal abnormality. Another name for trisomy 21 is _____________.

Down's syndrome

Which of the following best summarizes the difference between genotype and phenotype?

Genotype refers to the gene alleles that one has, and phenotype refers to the trait that is expressed in response to those alleles

Which bone is the heel of the human foot?

calcaneus

Identify the female reproductive structure labeled "F".

cervix