Question 1

Primary germ layers are formed during __________

Accepted Answer

A) implantation 
B) cleavage 
C) conception 
D) organogenesis 
E) gastrulation 
A) implantation 
B) cleavage 
C) conception 
D) organogenesis 
E) gastrulation

Question 2

In fetal circulation,the __________ bypasses the liver and the __________ bypasses the lungs.

Accepted Answer

A) ligamentum venosum; ligamentum arteriosum 
B) foramen ovale; ductus venosus 
C) ductus arteriosus; ductus venosus 
D) ductus venosus; ductus arteriosus 
E) ligamentum arteriosum; foramen ovale 
A) ligamentum venosum; ligamentum arteriosum 
B) foramen ovale; ductus venosus 
C) ductus arteriosus; ductus venosus 
D) ductus venosus; ductus arteriosus 
E) ligamentum arteriosum; foramen ovale

Question 3

Out of the 300 million ejaculated sperm,only about __________ reach the vicinity of the egg.

Accepted Answer

A) 20 to 30 
B) 200 to 300 
C) 2000 to 3000 
D) 20,000 to 30,000 
E) half 
A) 20 to 30 
B) 200 to 300 
C) 2000 to 3000 
D) 20,000 to 30,000 
E) half

Question 4

The __________ completely encloses the embryo and provides it with a stable environment.

Accepted Answer

A) yolk sac 
B) amnion 
C) chorion 
D) chorionic villus 
E) allantois 
A) yolk sac 
B) amnion 
C) chorion 
D) chorionic villus 
E) allantois

Question 5

In the slow block to polyspermy,sperm penetration releases an inflow of __________,which in turn stimulates the __________.

Accepted Answer

A) Cl-; corona radiata 
B) K+; zona pellucida 
C) Na+; fertilization membrane 
D) Ca2+; fertilization membrane 
E) Ca2+; cortical reaction 
A) Cl-; corona radiata 
B) K+; zona pellucida 
C) Na+; fertilization membrane 
D) Ca2+; fertilization membrane 
E) Ca2+; cortical reaction

Question 6

Prior to ejaculation,__________ in the plasma membrane of the sperm prevents premature release of __________.

Accepted Answer

A) cholesterol; acrosomal enzymes 
B) protein; acrosomal enzymes 
C) carbohydrates; prostaglandins 
D) hyaluronic acid; prostaglandins 
E) acrosin and hyaluronidase; acrosomal enzymes 
A) cholesterol; acrosomal enzymes 
B) protein; acrosomal enzymes 
C) carbohydrates; prostaglandins 
D) hyaluronic acid; prostaglandins 
E) acrosin and hyaluronidase; acrosomal enzymes

Question 7

Which of the following major events of prenatal development happens first?

Accepted Answer

A) The eyes are fully open 
B) The body is covered with lanugo 
C) Bone calcification begins 
D) The central nervous system begins to form 
E) Meconium accumulates in the intestines 
A) The eyes are fully open 
B) The body is covered with lanugo 
C) Bone calcification begins 
D) The central nervous system begins to form 
E) Meconium accumulates in the intestines

Primary germ layers are formed during __________

In fetal circulation,the bypasses the liver and the bypasses the lungs.

Out of the 300 million ejaculated sperm,only about __________ reach the vicinity of the egg.

The __________ completely encloses the embryo and provides it with a stable environment.

In the slow block to polyspermy,sperm penetration releases an inflow of ,which in turn stimulates the .

Prior to ejaculation, in the plasma membrane of the sperm prevents premature release of .

Which of the following major events of prenatal development happens first?

Major Themes of Anatomy and Physiology

The Chemistry of Life

Cellular Form and Function

Genetics of Cellular Function

Histology

The Integumentary System

Bone Tissue

The Skeletal System

Joints

The Muscular System

Muscular Tissue

Nervous Tissue

The Spinal Cord, spinal Nerves, and Somatic Reflexes

The Brain and Cranial Nerves

The Autonomic Nervous System and Visceral Reflexes

Sense Organs

The Endocrine System

The Circulatory System: Blood

The Circulatory System: Heart

The Circulatory System: Blood Vessels and Circulation

The Lymphatic and Immune Systems

The Respiratory System

The Urinary System

Water,Electrolyte,and Acid-Base Balance

The Digestive System

Nutrition and Metabolism

The Male Reproductive System

The Female Reproductive System

General Orientation to Human Anatomy

Filters

Exam 29: Human Development and Aging

Primary germ layers are formed during __________

In fetal circulation,the __________ bypasses the liver and the __________ bypasses the lungs.

Out of the 300 million ejaculated sperm,only about __________ reach the vicinity of the egg.

The __________ completely encloses the embryo and provides it with a stable environment.

In the slow block to polyspermy,sperm penetration releases an inflow of __________,which in turn stimulates the __________.

Prior to ejaculation,__________ in the plasma membrane of the sperm prevents premature release of __________.

Which of the following major events of prenatal development happens first?

Major Themes of Anatomy and Physiology

The Chemistry of Life

Cellular Form and Function

Genetics of Cellular Function

Histology

The Integumentary System

Bone Tissue

The Skeletal System

Joints

The Muscular System

Muscular Tissue

Nervous Tissue

The Spinal Cord, spinal Nerves, and Somatic Reflexes

The Brain and Cranial Nerves

The Autonomic Nervous System and Visceral Reflexes

Sense Organs

The Endocrine System

The Circulatory System: Blood

The Circulatory System: Heart

The Circulatory System: Blood Vessels and Circulation

The Lymphatic and Immune Systems

The Respiratory System

The Urinary System

Water,Electrolyte,and Acid-Base Balance

The Digestive System

Nutrition and Metabolism

The Male Reproductive System

The Female Reproductive System

General Orientation to Human Anatomy

Filters

In fetal circulation,the bypasses the liver and the bypasses the lungs.

In the slow block to polyspermy,sperm penetration releases an inflow of ,which in turn stimulates the .

Prior to ejaculation, in the plasma membrane of the sperm prevents premature release of .