WorksheetsEmbryology Chp. 1 -4
Total questions: 37
Worksheet time: 33mins
which represent the first change in shape of the embryo's body from a flat sheet of cells?
Migration of myoblasts from the myotome- muscle cells have begun migrating from the mytome by the 10th prenatal week
Formation of cartilage- Cartilage first appears in the 5th week
Formation of neural folds- The neural folds can be seen during the 3rd prenatal week. The lateral edges of the neural plate begin to elevate as folds arise dorsally.
Formation of the embryonic disk- the embryonic disk forms from teh small inner cell mass within the blastocyst. This occurs prior to the formation of the three primordial layers, long before the embryo acquires three-dimensional shape
Mitochondria produce which chemical for intracellular energy?
RNA- Mitochondria generate through ATP, not RNA production
ADP- Mitochondria generate through ATP, not ADP production
ATP- Mitochondria produce energy via ATP
DNA- Mitochondria generate through ATP, not DNA production
Which chemical is called the second messanger?
cAMP- cAMO transmits information to the intracellular organelles when activated by surface receptors on the plasma membrane
aDNA
dGMP
mRNA
Which cellular component facilitates protein synthesis?
Plasmalemma- the plasmalemma provides a protective barrier and regulates the transport of substances to and from the cell
Mitochondria- Mitochondria generates energy
Ribosomes- Ribosomes synthesize protein
Lysosomes- Lysosomes facilitate the breakdown of intracellular and extracellular substances
Which phase of the cell cycle is characterized as the initial resting stage?
S phase- the S phase is characterized as the stage in which DNA synthesis is complete
G1 phase - The G1 phase is the initial resting stage
Prophase- Prophase is characterized by four specific structural changes
G2 phase- The G2 phase is characterized by post-DNA duplication
Posttranslational modifications to proteins produced by the rough endoplasmic reticulum are accomplished by?
Mitochondria- The Golgi apparatus is responsible for posttranslational alterations; mitochondria is not
Messenger RNA- The Golgi apparatus is responsible for posttranslational alterations; mRNA is not
Smooth endoplasmic reticulum- The Golgi apparatus is responsible for posttranslational alterations the smooth reticulum is not
Golgi apparatus - The Golgi apparatus makes alterations to proteins produced by the rough endoplasmic reticulum
The ______ provides an ideal enviroment for the implantation and growth of the embryo.
Myometrium- this is the smooth muscle that lines the uterus
Endometrium- this provides the ovum witht eh nourishment necessary for implantation and growth
Uterine tube- this conducts the egg from the ovary to the uterus
Ovary- This is the female reproductive organ, in which the ova or eggs are produced
Intercalated disks are present in which type of muscle?
Smooth
Skeletal
Voluntary
Cardiac
Developmental abnormalities are not associated with which number of chromosomes?
46 - The normal human cell has 46 total chromosomes
45- developmental abnormalities are associated with less than the normal number of chromosomes (46)
44
47
What type of epithelium line the oral cavity?
(a)
Which cell supports the nervous system ?
(a)
What are the three types of Connective Tissue Proper?
(a)
How does epithelial tissue renew itself?
(a)
What are the three types of muscle tissue?
(a)
How often does the junctional epithelium renew?
(a)
Impulses conducted from the periphery of the body (muscles and glands to the central nervous system (brain and spinal cord) are conducted through which system?
(a)
Impulses pass from the central nervous system to involuntary muscles via what system?
(a)
Does digestion occur in the large intestine?
(a)
What structure insulates the axons of neural cells outside of the CNS?
(a)
Which organ system is the largest?
(a)
What arch does the mandible develop from?
(a)
What arch do the muscles of facial expression arise from?
(a)
(a) cartilage acts as a framework for the developing mandible.
Which type of bone protects the brain?
(a)
How does this type of bone form?
(a)
Which type of bone is not derived from cartilage?
(a)
In the first 20 weeks, the prenatal mandible articulates with which bones?
(a)
The primitive mouth is known as the (a)
Which gland regulates calcium levels in the body? What pharyngeal pouch is it developed from?
(a)
Which arches develop the tongue?
(a)
Which significant change occurs in the 5th prenatal week in facial development?
(a)
What structure of the tongue does the thyroid gland originate from?
(a)
What two structures must fuse in order for upper lip to develop properly?
(a)
A (a) cleft lip is where the nostril is completely open into the oral cavity
Which muscle grows aroudn the oral pit and at what week does it develop?
(a)
A swelling that opens on the surface of the neck is called a thyroglossal (a)
Palatal Development occurs during the (a) week.
