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Chapter 34: Problem 40

Which of the following best indicates that a female is ovulating? a. slight decrease in body temperature b. decrease in cervical volume c. more pliable cervical secretions d. change in breast size

Short Answer

Expert verified
c. more pliable cervical secretions

Step by step solution

01

Understand ovulation indicators

Review the physiological changes occurring during ovulation. The body undergoes various changes in temperature, cervical mucus, and hormone levels. These changes help pinpoint the ovulation period.
02

Evaluate body temperature option

Consider if a decrease in body temperature is an accurate indicator. Typically, during ovulation, there is actually a slight increase in basal body temperature due to a rise in progesterone levels.
03

Evaluate cervical volume option

Examine if a decrease in cervical volume indicates ovulation. Cervical volume changes are not a common method for detecting ovulation.
04

Evaluate cervical secretions option

Understand the role of cervical secretions. During ovulation, cervical mucus becomes more pliable and stretchy (like egg whites), which helps sperm to travel and survive in the female reproductive tract.
05

Evaluate change in breast size option

Consider if a change in breast size is a reliable indicator. While breasts can become tender, a change in size is not a standard ovulation sign.
06

Choose the best option

Based on the evaluation, the option indicating that a female is ovulating is 'more pliable cervical secretions.'

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Basal Body Temperature
Basal Body Temperature (BBT) is the body鈥檚 lowest resting temperature, typically measured in the morning before any physical activity. Tracking BBT helps to identify the ovulation period.
During a typical menstrual cycle, a woman's BBT is relatively stable before ovulation, typically ranging between 97.0掳F (36.1掳C) and 97.5掳F (36.4掳C).
However, just after ovulation, a hormone called progesterone kicks in and causes a slight raise in temperature, usually by about 0.5掳F (0.3掳C) to 1.0掳F (0.6掳C).
To accurately track BBT:
  • Use a digital basal thermometer
  • Measure at the same time each morning
  • Record the temperatures meticulously
The rise in BBT indicates that ovulation has occurred and the fertile window has closed.
Cervical Mucus Changes
Cervical mucus (CM) changes throughout the menstrual cycle and can be a strong indicator of ovulation.
Before ovulation, CM is usually scanty, sticky, and not conducive to sperm movement. However, right before and during ovulation, estrogen levels rise, causing CM to become more abundant, clear, stretchy, and egg-white-like.
This change in consistency and volume helps to facilitate the sperm's journey through the cervix to the egg, making it a key ovulation signal.
To monitor CM:
  • Observe the mucus's texture and color
  • Note the stretchiness by pulling it between two fingers
  • Record the daily changes for patterns
This stretchy, clear mucus is an excellent sign that ovulation is imminent or occurring.
Progesterone Levels
Progesterone is a hormone that plays a crucial role in regulating the menstrual cycle and preparing the body for pregnancy.
After ovulation, the corpus luteum secretes progesterone, causing several changes in the body:
  • It thickens the uterine lining to support a potential pregnancy
  • It triggers a slight rise in basal body temperature
  • It influences the consistency of cervical mucus
High levels of progesterone post-ovulation confirm that ovulation has occurred.
Blood tests can measure progesterone levels, but monitoring BBT and CM are commonly used natural methods.

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Most popular questions from this chapter

Explain the fate of the newly released secondary oocyte after ovulation. a. If it fuses with a sperm, the resulting zygote enters the cervix for implantation. If it is not fertilized, it will return to the oviduct. b. If it fuses with a sperm, the resulting zygote enters the uterus for implantation. If it is not fertilized, it will return to oviduct. c. If it fuses with a sperm, the resulting zygote enters the uterus for implantation. If it is not fertilized, it will degrade and exit the body. d. If it fuses with a sperm, the resulting zygote enters the cervix for implantation. If it is not fertilized, it will degrade and exit the body.

Compare and contrast spermatogenesis and oogenesis. a. Both are the form of gametogenesis that takes place through mitosis. Spermatogenesis is the process of formation of four sperm in the testes in males. The process of formation of one ovum in the ovaries in females is called oogenesis. b. Both are the form of gametogenesis that takes place through meiosis. Spermatogenesis is the process of formation of four sperm in the testes in males. The process of formation of four ova in the ovaries in females is called oogenesis. c. Bothare the form of gametogenesis that takes place through meiosis. Spermatogenesis is the process of formation of four sperm in the testes in males. The process of formation of one ovum in the ovaries in females is called oogenesis. d. Both are the form of gametogenesis that takes place through meiosis. Spermatogenesis is the process of formation of one sperm in the testes in males, while the process of formation of one ovum in the ovaries in females is called oogenesis.

Which female organ has the same embryonic origin as the penis? a. clitoris b. labia majora c. greater vestibular glands d. vagina

Why is broadcast spawning considered advantageous? a. Production of many eggs increases the chance of fertilization. b. Production of many sperm increases the chance of fertilization. c. It results in mixing of genes and greater genetic diversity. d. Animals that are motile carry out this process.

What is the nature of the oogonium and the secondary oocyte? Which process results in the formation of the secondary oocyte? a. A diploid oogonium forms a haploid oocyte by the process of mitosis. b. A haploid oogonium forms a diploid oocyte by the process of meiosis. c. A diploid oogonium forms a haploid oocyte by the process of meiosis. d. A haploid oogonium forms a haploid haploid oocyte by the process of meiosis.
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